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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-674MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325NORTH EASTBLTMMDFMDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-674
443-674-0MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119NORTH EASTNOCLLIKNOWN05/01/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-1MDUS LEC OF MARYLAND, INC.2589NORTH EASTCLMAMDJTDS001/15/2004Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-2MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN09/18/2019Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-3MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN01/04/2019Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-4MDCORE COMMUNICATIONS, INC.- MD2593NORTH EASTNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-5MDCORE COMMUNICATIONS, INC.- MD2593NORTH EASTNOCLLIKNOWN03/04/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-6MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN03/14/2017Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-7MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN07/20/2017Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-8MDCOMCAST IP PHONE, LLC318JNORTH EASTNOCLLIKNOWN06/30/2005Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-674-9MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325NORTH EASTBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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