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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-287MDVERIZON MARYLAND, INC. (Verizon Communications)9212NORTH EASTNRTEMDNERS000/00/0000Prefix Type: RBOC
Switch Name: NORTH EAST
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656MDARMSTRONG TELECOMMUNICATIONS, INC. - MD420CNORTH EASTBLTMMDCH47Z05/30/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-656
410-656-0MDARMSTRONG TELECOMMUNICATIONS, INC. - MD420CNORTH EASTBLTMMDCH47Z05/30/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-1MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN05/24/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-2MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN12/13/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-3MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228NORTH EASTBLTOMDKHDS010/08/2010Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-4MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-5MDBROADVIEW NETWORKS, INC. - MD (Windstream Holdings)9170NORTH EASTNOCLLIKNOWN04/28/2009Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-6MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN09/11/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-7MDCOMCAST IP PHONE, LLC318JNORTH EASTNOCLLIKNOWN12/18/2013Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-8MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN02/13/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-656-9MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697NORTH EASTBLTMMDCH14Z00/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-256
443-256-0MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN06/20/2019Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697NORTH EASTBLTMMDCH14ZN/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-2MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN03/07/2019Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-3MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN05/16/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-4MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN08/27/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-5MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN08/27/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-6MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN10/08/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-7MDCENTURYLINK COMMUNICATIONS, LLC (CenturyLink, Inc)508JNORTH EASTBLTMMDDN2MD05/27/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-8MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN09/02/2014Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-256-9MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN10/08/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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
443-715MDCAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications)7944NORTH EASTBLARMDBL1MD00/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-715
443-715-0MDCAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications)7944NORTH EASTBLARMDBL1MDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-2MDCOMCAST IP PHONE, LLC318JNORTH EASTNOCLLIKNOWN09/16/2016Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-3MDCAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD (Windstream Communications)7944NORTH EASTBLARMDBL1MDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-4MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN03/31/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-5MDTERRA NOVA TELECOM INC.145JNORTH EASTNOCLLIKNOWN01/10/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-6MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN03/31/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-7MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119NORTH EASTNOCLLIKNOWN05/06/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-715-8MDTWILIO INTERNATIONAL, INC.506JNORTH EASTNOCLLIKNOWN11/30/2020Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119NORTH EASTBLTMMDSN6MD00/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-877
443-877-0MDTERRA NOVA TELECOM INC.145JNORTH EASTNOCLLIKNOWN12/30/2020Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-1MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119NORTH EASTBLTMMDSN6MD01/26/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-2MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN09/13/2017Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-3MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN09/25/2018Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119NORTH EASTBLTMMDSN6MDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-5MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN01/14/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-6MDCOMCAST IP PHONE, LLC318JNORTH EASTNOCLLIKNOWN11/30/2007Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-7MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN04/02/2014Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-8MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN12/09/2015Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-877-9MDBANDWIDTH.COM CLEC, LLC - MD071FNORTH EASTNOCLLIKNOWN01/14/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967MDVERIZON MARYLAND, INC. (Verizon Communications)9212NORTH EASTNRTEMDNERS004/20/2001Prefix Type: RBOC
Switch Name: NORTH EAST
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-967
443-967-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212NORTH EASTNRTEMDNERS0N/APrefix Type: RBOC
Switch Name: NORTH EAST
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-1MDPEERLESS NETWORK OF MARYLAND, LLC568GNORTH EASTNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-2MDIDT AMERICA, CORP. - MD228CNORTH EASTNOCLLIKNOWN12/08/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-3MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN04/26/2013Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-4MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN07/22/2016Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-5MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN02/23/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-6MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN02/23/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-7MDTELNYX LLC073HNORTH EASTNOCLLIKNOWN04/14/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-8MDPEERLESS NETWORK OF MARYLAND, LLC568GNORTH EASTNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-967-9MDMETROPCS, INC. (T-Mobile US, Inc)5562NORTH EASTNOCLLIKNOWN12/07/2018Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-647MDONVOY SPECTRUM, LLC (Inteliquent)624HNORTH EASTBLTMMDCHXUX04/26/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-647
667-647-0MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036NORTH EASTNOCLLIKNOWN09/01/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-647-2MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN06/16/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-647-3MDONVOY, LLC - MD (Inteliquent)876DNORTH EASTNOCLLIKNOWN06/16/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-647-4MDONVOY SPECTRUM, LLC (Inteliquent)624HNORTH EASTBLTMMDCHXUX01/06/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-647-6MDONVOY SPECTRUM, LLC (Inteliquent)624HNORTH EASTBLTMMDCHXUX04/27/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-647-7MDONVOY SPECTRUM, LLC (Inteliquent)624HNORTH EASTBLTMMDCHXUX01/06/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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