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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
443-679MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325SEVERNBLTMMDFMDS000/00/0000Prefix 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 443-679
443-679-0MDNEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)4036SEVERNNOCLLIKNOWN04/10/2020Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-1MDUS LEC OF MARYLAND, INC.2589SEVERNNOCLLIKNOWN03/28/2002Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-2MDMETROPCS, INC. (T-Mobile US, Inc)5562SEVERNNOCLLIKNOWN01/15/2018Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-3MDBANDWIDTH.COM CLEC, LLC - MD071FSEVERNNOCLLIKNOWN04/14/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-4MDCOMCAST IP PHONE, LLC318JSEVERNNOCLLIKNOWN11/22/2016Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-5MDLEVEL 3 COMMUNICATIONS, LLC - (CenturyLink, Inc)6119SEVERNNOCLLIKNOWN06/06/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-6MDCELLCO PARTNERSHIP DBA VERIZON (Verizon Wireless)6395SEVERNNOCLLIKNOWN05/21/2012Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-7MDCELLCO PARTNERSHIP DBA VERIZON (Verizon Wireless)6395SEVERNNOCLLIKNOWN06/01/2015Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-8MDCELLCO PARTNERSHIP DBA VERIZON (Verizon Wireless)6395SEVERNNOCLLIKNOWN12/05/2013Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-679-9MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325SEVERNBLTMMDFMDS0N/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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