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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-672MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325PARKTONBLTMMDFMDS000/00/0000Prefix 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 443-672
443-672-0MDCORE COMMUNICATIONS, INC.- MD2593PARKTONNOCLLIKNOWN03/04/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-1MDUS LEC OF MARYLAND, INC.2589PARKTONCLMAMDJTDSA01/08/2004Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-2MDLEVEL 3 COMMUNICATIONS, LLC - (CenturyLink, Inc)6119PARKTONNOCLLIKNOWN01/31/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-3MDCORE COMMUNICATIONS, INC.- MD2593PARKTONNOCLLIKNOWN03/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-4MDONVOY, LLC - MD (Inteliquent)876DPARKTONNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-5MDONVOY, LLC - MD (Inteliquent)876DPARKTONNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-6MDPEERLESS NETWORK OF MARYLAND, 568GPARKTONNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-7MDPEERLESS NETWORK OF MARYLAND, 568GPARKTONNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-8MDBANDWIDTH.COM CLEC, LLC - MD071FPARKTONNOCLLIKNOWN09/14/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-672-9MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325PARKTONBLTMMDFMDS0N/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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