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
410-312MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-872MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-953
410-953-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-6MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-953-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-285MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS000/00/0000Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-285
443-285-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-285-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-285-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-285-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-285-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS0N/APrefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-537
443-537-1MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119COLUMBIACLMAMDSRRS009/25/2009Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-542
443-542-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS011/24/2004Prefix Type: RBOC
Switch Name: COLUMBIA
Switch Type: AT&T Tech Optic Remote Switch
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-542-6MDVERIZON MARYLAND, INC. (Verizon Communications)9212COLUMBIACLMAMDSRRS011/24/2004Prefix 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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