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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
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
443-546-0MDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless)6395COLUMBIABLTOMDKHBMD01/04/2011Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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
443-546-2MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228COLUMBIABLTOMDKHDS007/31/2007Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-3MDCOMCAST IP PHONE, LLC318JCOLUMBIABLTMMDCHXFX09/05/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-4MDCOMCAST IP PHONE, LLC318JCOLUMBIABLTMMDCHXFX09/05/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-5MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855COLUMBIABLTMMDCH03Z06/11/2010Prefix Type: PCS
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-6MDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless)6395COLUMBIABLTOMDKHBMD06/10/2010Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-7MDCELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (Verizon Wireless)6395COLUMBIABLTOMDKHBMD07/02/2010Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-8MDOMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (T-Mobile US, Inc)6855COLUMBIABLTMMDCH03Z09/22/2008Prefix Type: PCS
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-546-9MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119COLUMBIANOCLLIKNOWN04/14/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info