Input a CLLI:

Tip: A Partial CLLI can be entered, but must contain a minimum of the first 6 characters. I.E. 'DLLSTX'

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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
301-307MDVERIZON MARYLAND, INC. (Verizon Communications)9212WSNG238Z13CLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 301-307
301-307-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212WSNG238Z13CLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
301-596MDVERIZON MARYLAND, INC. (Verizon Communications)9212LAUREL238CLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
301-621MDVERIZON MARYLAND, INC. (Verizon Communications)9212WSNG238Z14CLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
301-629MDVERIZON MARYLAND, INC. (Verizon Communications)9212WSNG238Z14CLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 301-629
301-629-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212WSNG238Z14CLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
301-629-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212WSNG238Z14CLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
301-973MDBANDWIDTH.COM CLEC, LLC - MD071FWSNG238Z14CLMAMDCBDS000/00/0000Prefix Type: CLEC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-715MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-730MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-740MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-772
410-772-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-6MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-772-9MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-884MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-964MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-995
410-995-4MDCORE COMMUNICATIONS, INC.- MD2593ELLICOTTCYCLMAMDCBDS004/12/2019Prefix Type: CLEC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-997MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-367MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-367
443-367-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-367-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-367-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-367-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-367-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/16/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-518
443-518-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-518-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS012/18/2008Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-537
443-537-4MDLEVEL 3 COMMUNICATIONS, LLC - (CenturyLink, Inc)6119COLUMBIACLMAMDCBDS005/26/2009Prefix Type: CLEC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-546
443-546-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDCBDS0N/APrefix Type: RBOC
Switch Name: COLUMBIA 1
Switch Type: NTDMS100
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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