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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-697MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228MILLERSVLBLTOMDKHDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-697
410-697-0MDCORE COMMUNICATIONS, INC.- MD2593MILLERSVLNOCLLIKNOWN03/01/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-1MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN05/29/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-2MDONVOY SPECTRUM, LLC (Inteliquent)624HMILLERSVLNOCLLIKNOWN10/13/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-3MDCOMCAST IP PHONE, LLC318JMILLERSVLNOCLLIKNOWN06/30/2005Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119MILLERSVLNOCLLIKNOWN01/16/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-5MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119MILLERSVLNOCLLIKNOWN07/18/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-6MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229MILLERSVLBLTMMDSN5MD12/13/2005Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-7MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229MILLERSVLBLTMMDSN5MD12/13/2005Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-8MDATX TELECOMMUNICATIONS SERVICES, LTD.1958MILLERSVLNOCLLIKNOWN03/07/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-697-9MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228MILLERSVLBLTOMDKHDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-923MDVERIZON MARYLAND, INC. (Verizon Communications)9212MILLERSVLDRCRMDDCDS000/00/0000Prefix Type: RBOC
Switch Name: SEVERN
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325MILLERSVLBLTMMDFMDS000/00/0000Prefix 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 443-343
443-343-0MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119MILLERSVLNOCLLIKNOWN03/13/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-1MDUS LEC OF MARYLAND, INC.2589MILLERSVLCLMAMDJTDS006/18/2003Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-2MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN01/14/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-3MDCORE COMMUNICATIONS, INC.- MD2593MILLERSVLNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-5MDPAETEC COMMUNICATIONS, INC. - MD (Windstream Communications)4716MILLERSVLBLTMMDCHW2904/24/2006Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-6MDONVOY SPECTRUM, LLC (Inteliquent)624HMILLERSVLNOCLLIKNOWN04/23/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-7MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN06/28/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-8MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN12/14/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-343-9MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325MILLERSVLBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050MILLERSVLBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-494
443-494-0MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050MILLERSVLBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-1MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050MILLERSVLBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-2MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN09/11/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-3MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228MILLERSVLBLTOMDKHDS009/11/2008Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-4MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050MILLERSVLBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-5MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN03/03/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-6MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN06/09/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-7MDCENTURYLINK COMMUNICATIONS, LLC (CenturyLink, Inc)508JMILLERSVLBLTMMDDN2MD05/14/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-8MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-494-9MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697MILLERSVLBLTMMDCH14Z00/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-645
443-645-0MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN11/05/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697MILLERSVLBLTMMDCH14ZN/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-2MDCORE COMMUNICATIONS, INC.- MD2593MILLERSVLNOCLLIKNOWN03/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-3MDCOMCAST IP PHONE, LLC318JMILLERSVLNOCLLIKNOWN03/24/2015Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-4MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN02/25/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-5MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN02/25/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-6MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN09/21/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-7MDBARR TELL USA, INC.964HMILLERSVLNOCLLIKNOWN11/18/2016Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-8MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLNOCLLIKNOWN05/02/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-645-9MDTELNYX LLC073HMILLERSVLNOCLLIKNOWN04/14/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910MILLERSVLHNVAMDBHAMD05/11/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-748
443-748-0MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910MILLERSVLHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-1MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN03/03/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-2MDPEERLESS NETWORK OF MARYLAND, LLC568GMILLERSVLNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-3MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910MILLERSVLHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-4MDPEERLESS NETWORK OF MARYLAND, LLC568GMILLERSVLNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-5MDONVOY SPECTRUM, LLC (Inteliquent)624HMILLERSVLNOCLLIKNOWN01/07/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-6MDCORE COMMUNICATIONS, INC.- MD2593MILLERSVLNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-7MDCORE COMMUNICATIONS, INC.- MD2593MILLERSVLNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-8MDTWILIO INTERNATIONAL, INC.506JMILLERSVLNOCLLIKNOWN11/30/2020Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-748-9MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN10/24/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-393MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLBLTMMDCH45Z02/10/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-393
667-393-0MDBANDWIDTH.COM CLEC, LLC - MD071FMILLERSVLBLTMMDCH45Z02/10/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-393-2MDTON80 COMMUNICATIONS, LLC516JMILLERSVLNOCLLIKNOWN02/28/2022Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-393-3MDONVOY, LLC - MD (Inteliquent)876DMILLERSVLNOCLLIKNOWN09/16/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-393-8MDPEERLESS NETWORK OF MARYLAND, LLC568GMILLERSVLNOCLLIKNOWN04/16/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-393-9MDTERRA NOVA TELECOM INC.145JMILLERSVLNOCLLIKNOWN01/08/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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