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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-452MDVERIZON MARYLAND, INC. (Verizon Communications)9212CARDIFFCRDFMDCDRS000/00/0000Prefix Type: RBOC
Switch Name: CARDIFF
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-452
410-452-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212CARDIFFCRDFMDCDRS0N/APrefix Type: RBOC
Switch Name: CARDIFF
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-1MDATX TELECOMMUNICATIONS SERVICE1958CARDIFFNOCLLIKNOWN02/03/2003Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-2MDBALTIMORE-WASHINGTON TELEPHONE8697CARDIFFNOCLLIKNOWN05/12/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-3MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN03/09/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-4MDQUANTUM TELECOMMUNICATIONS, IN2596CARDIFFNOCLLIKNOWN10/22/2003Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212CARDIFFCRDFMDCDRS0N/APrefix Type: RBOC
Switch Name: CARDIFF
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-6MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN03/09/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-7MDLEVEL 3 COMMUNICATIONS, LLC - (CenturyLink, Inc)6119CARDIFFNOCLLIKNOWN12/05/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212CARDIFFCRDFMDCDRS0N/APrefix Type: RBOC
Switch Name: CARDIFF
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-452-9MDVERIZON MARYLAND, INC. (Verizon Communications)9212CARDIFFCRDFMDCDRS0N/APrefix Type: RBOC
Switch Name: CARDIFF
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-236MDCORE COMMUNICATIONS, INC.- MD2593CARDIFFBLTMMD91DS000/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697CARDIFFBLTMMDCH14Z00/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-347
443-347-0MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN03/16/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697CARDIFFBLTMMDCH14ZN/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-2MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-3MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN06/08/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-4MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN10/10/2017Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-5MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN02/16/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-6MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN02/16/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-7MDCENTURYLINK COMMUNICATIONS, LL (CenturyLink, Inc)508JCARDIFFBLTMMDDN2MD05/14/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-8MDTELNYX LLC073HCARDIFFNOCLLIKNOWN04/14/2017Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-347-9MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325CARDIFFBLTMMDFMDS000/00/0000Prefix 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 443-424
443-424-0MDARMSTRONG TELECOMMUNICATIONS, 420CCARDIFFNOCLLIKNOWN08/11/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-1MDUS LEC OF MARYLAND, INC.2589CARDIFFCLMAMDJTDS001/13/2004Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-2MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-3MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN07/18/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-4MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-5MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN01/31/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-6MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN09/12/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-7MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN05/04/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-8MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-424-9MDTELEPORT COMMUNICATIONS AMERIC (AT&T)7325CARDIFFBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483MDLEVEL 3 COMMUNICATIONS, LLC - (CenturyLink, Inc)6119CARDIFFBLTMMDSN6MD00/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-483
443-483-0MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN01/26/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-1MDPEERLESS NETWORK OF MARYLAND, 568GCARDIFFNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-2MDPEERLESS NETWORK OF MARYLAND, 568GCARDIFFNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-3MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-4MDLEVEL 3 COMMUNICATIONS, LLC - (CenturyLink, Inc)6119CARDIFFBLTMMDSN6MD01/16/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-5MDONVOY SPECTRUM, LLC (Inteliquent)624HCARDIFFNOCLLIKNOWN01/14/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-6MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-7MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-8MDTERRA NOVA TELECOM INC.145JCARDIFFNOCLLIKNOWN12/30/2020Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-483-9MDONVOY SPECTRUM, LLC (Inteliquent)624HCARDIFFNOCLLIKNOWN01/14/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353MDCORETEL MARYLAND, INC. - MD469JCARDIFFBLTQMD01DS009/12/2019Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-353
667-353-0MDPEERLESS NETWORK OF MARYLAND, 568GCARDIFFNOCLLIKNOWN09/30/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-1MDMETROPCS, INC. (T-Mobile US, Inc)5562CARDIFFNOCLLIKNOWN05/04/2021Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-2MDONVOY SPECTRUM, LLC (Inteliquent)624HCARDIFFNOCLLIKNOWN04/23/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-3MDTWILIO INTERNATIONAL, INC.506JCARDIFFNOCLLIKNOWN11/25/2020Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-4MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN02/03/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-5MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN02/03/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-7MDONVOY, LLC - MD (Inteliquent)876DCARDIFFNOCLLIKNOWN11/20/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-8MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFNOCLLIKNOWN11/08/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-353-9MDCORETEL MARYLAND, INC. - MD469JCARDIFFBLTQMD01DS009/16/2019Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-395MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFBLTMMDCH45Z02/22/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-395
667-395-0MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFBLTMMDCH45Z02/22/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-395-1MDBANDWIDTH.COM CLEC, LLC - MD071FCARDIFFBLTMMDCH45Z03/25/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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