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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-457MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325BRYNPKLNCMBLTMMDFMDS000/00/0000Prefix 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 443-457
443-457-0MDBANDWIDTH.COM CLEC, LLC - MD071FBRYNPKLNCMNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-1MDUS LEC OF MARYLAND, INC.2589BRYNPKLNCMCLMAMDJTDS003/03/2003Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-2MDONVOY, LLC - MD (Inteliquent)876DBRYNPKLNCMNOCLLIKNOWN02/25/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-3MDBANDWIDTH.COM CLEC, LLC - MD071FBRYNPKLNCMNOCLLIKNOWN05/06/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-4MDBALTIMORE-WASHINGTON TELEPHONE8697BRYNPKLNCMNOCLLIKNOWN05/12/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-5MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325BRYNPKLNCMBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-6MDCOMCAST IP PHONE, LLC318JBRYNPKLNCMNOCLLIKNOWN02/15/2007Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-7MDCAVALIER TELEPHONE MID-ATLANTI (Windstream Communications)3910BRYNPKLNCMNOCLLIKNOWN08/11/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-8MDBANDWIDTH.COM CLEC, LLC - MD071FBRYNPKLNCMNOCLLIKNOWN12/14/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-457-9MDONVOY, LLC - MD (Inteliquent)876DBRYNPKLNCMNOCLLIKNOWN02/25/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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