Input an Area Code (required) followed by the Prefix, or Exchange (optional):
-
If you were a paid member, you could be loading this into any version of Excel or Access (or any other software that understands CSV) right now for less than you paid for your breakfast or lunch today. If you are a member please login to access this and other functionality.
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 (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 S (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 O (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 (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 (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 O (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 - (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
Member of The Internet Defense League