| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 410-290 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-309 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-312 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-381 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-423 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | BLTMMDFMDS0 | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-447 | MD | USA MOBILITY WIRELESS, INC. (Spok, Inc) | 6630 | COLUMBIA | HNVAMDAE3MD | 00/00/0000 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-531 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLVLMDCEDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-707 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 00/00/0000 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-715 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-730 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-740 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 410-772-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-1 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-2 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-3 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-4 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 06/09/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-5 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-6 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-7 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-8 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-772-9 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 410-794-0 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-1 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-2 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-3 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-4 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-5 | MD | BALTIMORE-WASHINGTON TELEPHONE (BWT) | 8697 | COLUMBIA | NOCLLIKNOWN | 04/17/2006 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 05/02/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-7 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-8 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-794-9 | MD | LEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc) | 7591 | COLUMBIA | BLTMMDDNDS2 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-872 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-884 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-910 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 410-953-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-1 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-2 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-3 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-4 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-5 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-6 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-7 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-8 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-953-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 08/26/2010 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-964 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 410-992-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-1 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-2 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/29/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-3 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-4 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-5 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-6 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-7 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-8 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-992-9 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | ELCYMDELDS0 | N/A | Prefix Type: RBOC Switch Name: ELLICOTT CITY Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 410-997 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-259-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-1 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-2 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-3 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-4 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-5 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | NOCLLIKNOWN | 08/23/2013 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-6 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-7 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-8 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDOBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: WECO 5ESS Host (Digital) LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-259-9 | MD | ATX TELECOMMUNICATIONS SERVICES, LTD. | 1958 | COLUMBIA | NOCLLIKNOWN | 02/03/2003 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-276-0 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-1 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-2 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-3 | MD | VDL, INC. DBA GLOBAL TELECOM BROKERS - MD | 4492 | COLUMBIA | NOCLLIKNOWN | 10/17/2003 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-4 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-5 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-6 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-7 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-8 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 03/01/2004 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-276-9 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-283 | MD | PAETEC COMMUNICATIONS, INC. - MD (Windstream Communications) | 4716 | COLUMBIA | BLTMMDCHW29 | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-285-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-1 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 04/05/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-2 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/07/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 08/05/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-4 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-5 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-6 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | N/A | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-7 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-8 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-285-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/07/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319 | MD | CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications) | 7944 | COLUMBIA | BLARMDBL1MD | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-319-0 | MD | CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications) | 7944 | COLUMBIA | BLARMDBL1MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-1 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 07/14/2020 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-2 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 12/09/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 05/19/2008 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-4 | MD | LIGHTWAVE COMMUNICATIONS, LLC - MD | 5966 | COLUMBIA | NOCLLIKNOWN | 06/08/2005 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-5 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 02/10/2005 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-6 | MD | CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications) | 7944 | COLUMBIA | BLARMDBL1MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-7 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 12/09/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-8 | MD | XO MARYLAND, LLC (Verizon Communications) | 4773 | COLUMBIA | BLTMMDSNDS5 | 11/09/2010 | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-319-9 | MD | CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications) | 7944 | COLUMBIA | BLARMDBL1MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-367-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-1 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 06/02/2005 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-2 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-3 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-4 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 05/25/2007 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-5 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-6 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 03/14/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-7 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/29/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-367-9 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 03/10/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393 | MD | GLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc) | 6050 | COLUMBIA | BLTOMDXIDS0 | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-393-0 | MD | GLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc) | 6050 | COLUMBIA | BLTOMDXIDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-1 | MD | GLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc) | 6050 | COLUMBIA | BLTOMDXIDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-2 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 08/15/2005 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-3 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 08/15/2005 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-4 | MD | GLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc) | 6050 | COLUMBIA | BLTOMDXIDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-5 | MD | GLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc) | 6050 | COLUMBIA | BLTOMDXIDS0 | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-6 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 04/13/2006 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-7 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 03/10/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-8 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-393-9 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | 05/18/2001 | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-430-0 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | N/A | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-1 | MD | IP HORIZON LLC | 515J | COLUMBIA | NOCLLIKNOWN | 09/15/2016 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-2 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | 07/19/2005 | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-3 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | N/A | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-4 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 09/14/2016 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-5 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 09/14/2016 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-6 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | 07/19/2005 | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-7 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 05/19/2008 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-8 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 02/28/2006 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-430-9 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDSN5MD | N/A | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-472-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 05/07/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-1 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 11/06/2003 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-2 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 10/03/2003 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/08/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-4 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-5 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 10/08/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 12/06/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 02/03/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 12/06/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-472-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 10/07/2005 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 12/16/2008 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-518-0 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/23/2009 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-1 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 12/18/2008 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-2 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 12/18/2008 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-3 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 12/18/2008 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-4 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 12/18/2008 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-5 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 12/18/2008 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-6 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/23/2009 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-7 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | BLTMMDCDDS0 | 03/09/2010 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-8 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/17/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-518-9 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/23/2009 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLVLMDCEDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-535-0 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLVLMDCEDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-1 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 04/20/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-2 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 08/17/2005 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 12/27/2005 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-4 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 05/03/2006 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-5 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 01/10/2007 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-6 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 02/21/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-7 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 06/09/2009 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-8 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLVLMDCEDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-535-9 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLVLMDCEDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: Northern Telecom DMS100 (Digital) Host LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 00/00/0000 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-537-0 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 09/30/2009 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-1 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | CLMAMDSRRS0 | 09/25/2009 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-2 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 02/15/2011 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 05/05/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-4 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | CLMAMDCBDS0 | 05/26/2009 | Prefix Type: CLEC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-5 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/02/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/02/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/02/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/02/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-537-9 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 12/29/2010 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-538 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 06/20/2001 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDS0 | 00/00/0000 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-539-0 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDS0 | N/A | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-1 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDS0 | N/A | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-2 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDS0 | N/A | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-3 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDS0 | N/A | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-4 | MD | PAETEC COMMUNICATIONS, INC. - MD (Windstream Communications) | 4716 | COLUMBIA | BLTMMDCHW29 | 08/04/2006 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-5 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 09/11/2008 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/29/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-7 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 01/25/2010 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-8 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 02/01/2008 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-539-9 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDS0 | N/A | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 00/00/0000 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-542-0 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | N/A | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-1 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 10/27/2004 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-2 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | N/A | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-3 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 02/15/2005 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-4 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | 11/24/2004 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-5 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | NOCLLIKNOWN | 06/01/2004 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-6 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDSRRS0 | 11/24/2004 | Prefix Type: RBOC Switch Name: COLUMBIA Switch Type: AT&T Tech Optic Remote Switch LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 01/04/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 08/02/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-542-9 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 01/09/2007 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | 05/18/2001 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-545-0 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 08/30/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-1 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-2 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-3 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-4 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 03/05/2008 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-5 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 05/08/2006 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/03/2008 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-7 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 02/03/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-8 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 08/22/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-545-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/03/2008 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-546-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 01/04/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-1 | MD | VERIZON MARYLAND, INC. (Verizon Communications) | 9212 | COLUMBIA | CLMAMDCBDS0 | N/A | Prefix Type: RBOC Switch Name: COLUMBIA 1 Switch Type: NTDMS100 LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-2 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 07/31/2007 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-3 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 09/05/2006 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-4 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 09/05/2006 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-5 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 06/11/2010 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/10/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/02/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-8 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 09/22/2008 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-546-9 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 04/14/2008 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583 | MD | CTC COMMUNICATIONS CORP. - MD (Windstream Holdings) | 2697 | COLUMBIA | BLTMMDCH14Z | 00/00/0000 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-583-0 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 02/03/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-1 | MD | CTC COMMUNICATIONS CORP. - MD (Windstream Holdings) | 2697 | COLUMBIA | BLTMMDCH14Z | N/A | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-2 | MD | QUANTUM TELECOMMUNICATIONS, INC. - MD | 2596 | COLUMBIA | NOCLLIKNOWN | 01/04/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-3 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 03/03/2014 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-4 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 03/03/2014 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-5 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 08/06/2014 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-6 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 05/05/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-7 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 09/02/2014 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-8 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 04/14/2015 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-583-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 10/13/2014 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | 05/10/2001 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-656-0 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-1 | MD | ONVOY SPECTRUM, LLC (Inteliquent) | 624H | COLUMBIA | NOCLLIKNOWN | 04/23/2021 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-3 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-4 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-5 | MD | TWILIO INTERNATIONAL, INC. | 506J | COLUMBIA | NOCLLIKNOWN | 11/25/2020 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-6 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-7 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-8 | MD | CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications) | 3910 | COLUMBIA | HNVAMDBHAMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-656-9 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 06/15/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 03/05/2008 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-718-0 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 01/20/2010 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-1 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/03/2009 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-2 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 03/06/2008 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-3 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 03/06/2008 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-4 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 05/29/2008 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-5 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 05/29/2008 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-6 | MD | BROADVIEW NETWORKS, INC. - MD (Windstream Holdings) | 9170 | COLUMBIA | NOCLLIKNOWN | 09/15/2008 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 06/03/2009 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 03/04/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-718-9 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 11/12/2008 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 03/29/2011 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-741-0 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 07/11/2011 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-1 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 04/20/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-2 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 07/22/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-3 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 03/31/2011 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-4 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 04/16/2012 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-5 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 05/21/2013 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-6 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 05/21/2013 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-7 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 07/08/2014 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-8 | MD | PEERLESS NETWORK OF MARYLAND, LLC | 568G | COLUMBIA | NOCLLIKNOWN | 04/04/2013 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-741-9 | MD | PEERLESS NETWORK OF MARYLAND, LLC | 568G | COLUMBIA | NOCLLIKNOWN | 04/04/2013 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-745 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 00/00/0000 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 05/18/2005 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-766-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 11/28/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-1 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 05/19/2005 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 07/22/2016 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 07/22/2016 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-4 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 08/27/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-5 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 08/05/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-6 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 08/27/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-7 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 06/19/2006 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-8 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 08/05/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-766-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 12/27/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 11/19/2018 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 443-774 | |||||||
| 443-774-0 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 03/28/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-1 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 03/28/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-2 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 03/14/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-3 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 03/14/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-4 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 09/10/2019 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-5 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 06/20/2019 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-6 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 03/14/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-7 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 03/14/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-8 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/20/2019 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-774-9 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 11/20/2018 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 01/15/2001 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 443-812 | |||||||
| 443-812-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-1 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-2 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-4 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-5 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | N/A | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 08/06/2003 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-812-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/05/2003 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 443-832 | |||||||
| 443-832-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/29/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-1 | MD | US LEC OF MARYLAND, INC. | 2589 | COLUMBIA | CLMAMDJTDSA | 10/14/2009 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-2 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 11/03/2009 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-3 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 07/16/2010 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-4 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-5 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/29/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-6 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | BLTMMDSN6MD | 06/27/2013 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 10/06/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/05/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-832-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/05/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 12/19/2001 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 443-864 | |||||||
| 443-864-0 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | N/A | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-1 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | N/A | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-2 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 03/17/2003 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-3 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 10/13/2003 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-4 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 09/20/2007 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-5 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 09/20/2007 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-6 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | N/A | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-7 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | N/A | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-8 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | N/A | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-864-9 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | N/A | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 00/00/0000 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 443-878 | |||||||
| 443-878-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 02/04/2010 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-1 | MD | CTC COMMUNICATIONS CORP. - MD (Windstream Holdings) | 2697 | COLUMBIA | NOCLLIKNOWN | 07/29/2005 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-2 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/07/2005 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 02/06/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-4 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 03/06/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-5 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 04/06/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 04/06/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 01/05/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/11/2005 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-878-9 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 04/06/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | BLTMMDCHCMD | 00/00/0000 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 443-896 | |||||||
| 443-896-0 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | NOCLLIKNOWN | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-1 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | BLTMMDCHCMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-2 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | BLTMMDCHCMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 10/04/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-4 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 10/04/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-5 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | BLTMMDCHCMD | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-6 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 09/06/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-7 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 07/03/2007 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-8 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 12/05/2006 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-896-9 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | NOCLLIKNOWN | N/A | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 10/07/2011 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-917-0 | MD | IP HORIZON LLC | 515J | COLUMBIA | NOCLLIKNOWN | 08/12/2013 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-1 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 04/14/2015 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-2 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 01/17/2013 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-3 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 02/06/2012 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-4 | MD | XO MARYLAND, LLC (Verizon Communications) | 4773 | COLUMBIA | BLTMMDSNDS5 | 06/25/2013 | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-5 | MD | XO MARYLAND, LLC (Verizon Communications) | 4773 | COLUMBIA | BLTMMDSNDS5 | 06/25/2013 | Prefix Type: CLEC Switch Name: BRYNPKLNCM Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-6 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 04/14/2015 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-7 | MD | CENTURYLINK COMMUNICATIONS, LLC (CenturyLink, Inc) | 508J | COLUMBIA | BLTMMDDN2MD | 08/05/2013 | Prefix Type: IPES Switch Name: GLENBURNIE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-8 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 01/15/2015 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-917-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 01/15/2015 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 11/21/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 443-979-0 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 11/23/2011 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-1 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 07/02/2013 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-2 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 10/29/2014 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-3 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 03/14/2012 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-4 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 12/05/2014 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-5 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 12/05/2014 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-6 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 02/10/2015 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-7 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 11/10/2014 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-8 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 10/06/2014 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 443-979-9 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 10/06/2014 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 12/18/2015 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-200 | |||||||
| 667-200-0 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 12/22/2015 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-1 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 03/29/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-2 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 03/29/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-3 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 05/22/2017 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-4 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 12/05/2017 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-5 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 03/31/2016 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-6 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 05/18/2016 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-7 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 02/22/2016 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-8 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 02/22/2016 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-200-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 05/18/2016 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240 | MD | BARR TELL USA, INC. | 964H | COLUMBIA | BLTQMD012MD | 11/22/2016 | Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-240 | |||||||
| 667-240-0 | MD | TELNYX LLC | 073H | COLUMBIA | BLTMMDCHX7X | 03/02/2017 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-1 | MD | BARR TELL USA, INC. | 964H | COLUMBIA | BLTQMD012MD | 11/23/2016 | Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-2 | MD | COMCAST IP PHONE, LLC | 318J | COLUMBIA | BLTMMDCHXFX | 12/20/2016 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 01/13/2017 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-4 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 01/13/2017 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-5 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 05/01/2017 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-6 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 08/04/2017 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-7 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/26/2018 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-8 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 04/30/2018 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-240-9 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 08/04/2017 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/14/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-257 | |||||||
| 667-257-0 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/15/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-1 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/15/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-2 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/15/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-3 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/15/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-4 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 12/13/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-5 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 09/16/2022 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-6 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | NOCLLIKNOWN | 04/07/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-7 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 11/14/2019 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-8 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 06/10/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-257-9 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | NOCLLIKNOWN | 06/10/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 12/24/2019 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-261 | |||||||
| 667-261-0 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 02/12/2020 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-1 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 02/12/2020 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 02/12/2020 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/30/2020 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-4 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/30/2020 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-5 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 03/30/2020 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-6 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 12/15/2020 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-7 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 12/15/2020 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-8 | MD | PEERLESS NETWORK OF MARYLAND, LLC | 568G | COLUMBIA | NOCLLIKNOWN | 05/26/2020 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-261-9 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 12/26/2019 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | BLTMMD91GT0 | 06/01/2018 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-300 | |||||||
| 667-300-0 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | BLTMMD91GT0 | 06/05/2018 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-1 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | BLTMMD91GT0 | 06/05/2018 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-2 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/12/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-3 | MD | CORE COMMUNICATIONS, INC.- MD | 2593 | COLUMBIA | BLTMMD91GT0 | 06/05/2018 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-4 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/12/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-5 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/12/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-6 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/12/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-7 | MD | VONAGE AMERICA LLC | 197D | COLUMBIA | BLTMMDCHXQX | 11/12/2018 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-8 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 07/12/2018 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-300-9 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 07/12/2018 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | BLTMMDCH45Z | 10/25/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-359 | |||||||
| 667-359-0 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | BLTMMDCH45Z | 10/25/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-1 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | BLTMMDCH45Z | 10/25/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-2 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | BLTMMDCH45Z | 10/25/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-3 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 03/28/2022 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-4 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 11/21/2022 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-5 | MD | PEERLESS NETWORK OF MARYLAND, LLC | 568G | COLUMBIA | NOCLLIKNOWN | 08/02/2022 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-6 | MD | ONVOY SPECTRUM, LLC (Inteliquent) | 624H | COLUMBIA | NOCLLIKNOWN | 12/16/2021 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-7 | MD | ONVOY SPECTRUM, LLC (Inteliquent) | 624H | COLUMBIA | NOCLLIKNOWN | 12/16/2021 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-8 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 05/17/2022 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-359-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 05/17/2022 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421 | MD | TELNYX LLC | 073H | COLUMBIA | BLTMMDCHX7X | 00/00/0000 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-421 | |||||||
| 667-421-0 | MD | DISH WIRELESS, LLC | 490J | COLUMBIA | NOCLLIKNOWN | 12/22/2023 | Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-1 | MD | DISH WIRELESS, LLC | 490J | COLUMBIA | NOCLLIKNOWN | 12/22/2023 | Prefix Type: UNKNOWN Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-2 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 01/30/2024 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-3 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | NOCLLIKNOWN | 01/30/2024 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-4 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 02/22/2024 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-5 | MD | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless) | 6395 | COLUMBIA | BLTOMDKHBMD | 02/22/2024 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-7 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 06/14/2023 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-8 | MD | TELNYX LLC | 073H | COLUMBIA | BLTMMDCHX7X | 03/27/2023 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-421-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 06/14/2023 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-447 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH40Z | 08/23/2023 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-447 | |||||||
| 667-447-4 | MD | TERRA NOVA TELECOM INC. | 145J | COLUMBIA | NOCLLIKNOWN | 10/17/2023 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-447-7 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH40Z | 08/23/2023 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-447-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH40Z | 08/23/2023 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 08/31/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| Thousands block for 667-678 | |||||||
| 667-678-0 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 09/10/2021 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-1 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 09/10/2021 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-2 | MD | ONVOY, LLC - MD (Inteliquent) | 876D | COLUMBIA | BLTMMDCH42Z | 08/31/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-3 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 09/24/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-4 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 09/24/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-5 | MD | BANDWIDTH.COM CLEC, LLC - MD | 071F | COLUMBIA | NOCLLIKNOWN | 09/24/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-6 | MD | COMMIO, LLC | 939H | COLUMBIA | NOCLLIKNOWN | 09/14/2021 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-7 | MD | COMMIO, LLC | 939H | COLUMBIA | NOCLLIKNOWN | 09/14/2021 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-8 | MD | COMMIO, LLC | 939H | COLUMBIA | NOCLLIKNOWN | 09/14/2021 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-678-9 | MD | COMMIO, LLC | 939H | COLUMBIA | NOCLLIKNOWN | 09/14/2021 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | CLMAMDNIDS1 | 11/04/2015 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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| 667-786-0 | MD | METROPCS, INC. (T-Mobile US, Inc) | 5562 | COLUMBIA | BLTMMDCH40Z | 02/22/2016 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-1 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 12/09/2015 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-2 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 12/09/2015 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-3 | MD | NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless) | 4036 | COLUMBIA | CLMAMDORGT0 | 12/09/2015 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-4 | MD | LEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc) | 6119 | COLUMBIA | NOCLLIKNOWN | 01/12/2016 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-5 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | CLMAMDNIDS1 | 11/05/2015 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-6 | MD | TELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T) | 7325 | COLUMBIA | CLMAMDNIDS1 | 11/05/2015 | Prefix Type: CLEC Switch Name: COLUMBIA Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-7 | MD | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications) | 7228 | COLUMBIA | BLTOMDKHDS0 | 03/02/2016 | Prefix Type: CLEC Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-8 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 01/07/2016 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
| 667-786-9 | MD | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc) | 6855 | COLUMBIA | BLTMMDCH03Z | 01/07/2016 | Prefix Type: PCS Switch Name: BALTIMORE Switch Type: N/A LATA: Baltimore MD (238) Tandem: N/A Detailed Switch Info |
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Last Updated: Thu Apr 18 02:31:17 2024