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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
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
443-367-1MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855COLUMBIABLTMMDCH03Z06/02/2005Prefix Type: PCS
Switch Name: BALTIMORE
Switch Type: N/A
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
443-367-4MDUS LEC OF MARYLAND, INC.2589COLUMBIACLMAMDJTDSA05/25/2007Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
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
443-367-6MDCORE COMMUNICATIONS, INC.- MD2593COLUMBIANOCLLIKNOWN03/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
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
443-367-8MDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless)6395COLUMBIABLTOMDKHBMD09/29/2011Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-367-9MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119COLUMBIANOCLLIKNOWN03/10/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info