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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-282MDVERIZON MARYLAND, INC. (Verizon Communications)9212DUNDALKDNDLMDDNDS000/00/0000Prefix Type: RBOC
Switch Name: DUNDALK
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-284MDVERIZON MARYLAND, INC. (Verizon Communications)9212DUNDALKDNDLMDDNDS000/00/0000Prefix Type: RBOC
Switch Name: DUNDALK
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-285MDVERIZON MARYLAND, INC. (Verizon Communications)9212DUNDALKDNDLMDDNDS000/00/0000Prefix Type: RBOC
Switch Name: DUNDALK
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-288MDVERIZON MARYLAND, INC. (Verizon Communications)9212DUNDALKDNDLMDDNDS000/00/0000Prefix Type: RBOC
Switch Name: DUNDALK
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTOMDKHDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-650
410-650-0MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN03/03/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-1MDBALTIMORE-WASHINGTON TELEPHONE (BWT)8697DUNDALKNOCLLIKNOWN05/18/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-2MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228DUNDALKBLTOMDKHDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-3MDVDL, INC. DBA GLOBAL TELECOM BROKERS - MD4492DUNDALKNOCLLIKNOWN10/17/2003Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119DUNDALKNOCLLIKNOWN04/13/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-5MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN10/20/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-6MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN02/23/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-7MDLEVEL 3 TELECOM OF MARYLAND, LLC - MD (CenturyLink, Inc)7591DUNDALKNOCLLIKNOWN05/03/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-8MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN03/03/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-650-9MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTOMDKHDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD00/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-216
443-216-0MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN03/01/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-1MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119DUNDALKNOCLLIKNOWN05/31/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-2MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD10/22/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-3MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD10/22/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-4MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD10/22/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-5MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD10/22/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-6MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD10/22/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-7MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN02/11/2005Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-8MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT006/17/2019Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-216-9MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN05/28/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325DUNDALKBLTMMDFMDS000/00/0000Prefix 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 443-376
443-376-0MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325DUNDALKBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-1MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN04/12/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-2MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN03/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-3MDPAETEC COMMUNICATIONS, INC. - MD (Windstream Communications)4716DUNDALKBLTMMDCHW2906/04/2007Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-4MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN04/10/2019Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-5MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN08/01/2007Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-6MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN02/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-7MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN11/02/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-8MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN06/07/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-376-9MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN04/12/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050DUNDALKBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-399
443-399-0MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050DUNDALKBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-1MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050DUNDALKBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-2MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN09/12/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-3MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN04/23/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-4MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050DUNDALKBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-5MDPEERLESS NETWORK OF MARYLAND, LLC568GDUNDALKNOCLLIKNOWN09/30/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-6MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN04/23/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-7MDCENTURYLINK COMMUNICATIONS, LLC (CenturyLink, Inc)508JDUNDALKBLTMMDDN2MD03/06/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-8MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN03/07/2008Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-9MDIP HORIZON LLC515JDUNDALKNOCLLIKNOWN08/12/2013Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-407
443-407-0MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-1MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-2MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-3MDONVOY SPECTRUM, LLC (Inteliquent)624HDUNDALKNOCLLIKNOWN02/24/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-4MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-5MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-6MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-7MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN02/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-8MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN03/16/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-407-9MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDCDDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDSN5MD00/00/0000Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-503
443-503-0MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDSN5MDN/APrefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-1MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDSN5MDN/APrefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-2MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229DUNDALKBLTMMDSN5MDN/APrefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-3MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119DUNDALKNOCLLIKNOWN02/01/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119DUNDALKNOCLLIKNOWN01/27/2003Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-5MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN09/06/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-6MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN09/06/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-7MDBROADVIEW NETWORKS, INC. - MD (Windstream Holdings)9170DUNDALKNOCLLIKNOWN04/08/2009Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-8MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN01/07/2013Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-503-9MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/05/2020Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530MDPAETEC COMMUNICATIONS, INC. - MD (Windstream Communications)4716DUNDALKBLTMMDCHW2900/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-530
443-530-0MDPEERLESS NETWORK OF MARYLAND, LLC568GDUNDALKNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-1MDPEERLESS NETWORK OF MARYLAND, LLC568GDUNDALKNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-2MDIP HORIZON LLC515JDUNDALKNOCLLIKNOWN09/15/2016Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-3MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN01/21/2014Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-4MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN09/01/2017Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-5MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN12/23/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-6MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN04/11/2016Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-7MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN05/01/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-8MDTELNYX LLC073HDUNDALKNOCLLIKNOWN04/13/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-530-9MDPAETEC COMMUNICATIONS, INC. - MD (Windstream Communications)4716DUNDALKBLTMMDCHW29N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549MDUS LEC OF MARYLAND, INC.2589DUNDALKCLMAMDJTDS000/00/0000Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-549
443-549-0MDUS LEC OF MARYLAND, INC.2589DUNDALKCLMAMDJTDS0N/APrefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-1MDUS LEC OF MARYLAND, INC.2589DUNDALKCLMAMDJTDS0N/APrefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-2MDUS LEC OF MARYLAND, INC.2589DUNDALKCLMAMDJTDS0N/APrefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-3MDUS LEC OF MARYLAND, INC.2589DUNDALKCLMAMDJTDS0N/APrefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-4MDCOMCAST IP PHONE, LLC318JDUNDALKNOCLLIKNOWN05/01/2015Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-5MDBARR TELL USA, INC.964HDUNDALKNOCLLIKNOWN11/18/2016Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-6MDTERRA NOVA TELECOM INC.145JDUNDALKNOCLLIKNOWN01/08/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-8MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-549-9MDUS LEC OF MARYLAND, INC.2589DUNDALKCLMAMDJTDS0N/APrefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKBLTMMDSNDS500/00/0000Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-586
443-586-0MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN02/01/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-1MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN02/01/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-2MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKBLTMMDSNDS510/10/2018Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-3MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKBLTMMDSNDS510/10/2018Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-4MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKBLTMMDSNDS510/10/2018Prefix Type: CLEC
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Detailed Switch Info
443-586-5MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/27/2017Prefix Type: WIRELESS
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Detailed Switch Info
443-586-6MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/27/2017Prefix Type: WIRELESS
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Detailed Switch Info
443-586-7MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN02/01/2024Prefix Type: CLEC
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Detailed Switch Info
443-696MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD05/10/2001Prefix Type: CLEC
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Detailed Switch Info
Thousands block for 443-696
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Detailed Switch Info
443-696-1MDONVOY SPECTRUM, LLC (Inteliquent)624HDUNDALKNOCLLIKNOWN10/26/2021Prefix Type: WIRELESS
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Tandem: N/A
Detailed Switch Info
443-696-3MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
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Detailed Switch Info
443-696-4MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228DUNDALKBLTOMDKHDS009/11/2008Prefix Type: CLEC
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Detailed Switch Info
443-696-5MDONVOY SPECTRUM, LLC (Inteliquent)624HDUNDALKNOCLLIKNOWN10/26/2021Prefix Type: WIRELESS
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Tandem: N/A
Detailed Switch Info
443-696-6MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN10/10/2018Prefix Type: CLEC
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Tandem: N/A
Detailed Switch Info
443-696-7MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
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Detailed Switch Info
443-696-8MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN08/24/2021Prefix Type: CLEC
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Detailed Switch Info
443-696-9MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
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Detailed Switch Info
443-879MDVERIZON MARYLAND, INC. (Verizon Communications)9212DUNDALKDNDLMDDNDS000/00/0000Prefix Type: RBOC
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-879
443-879-0MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN04/12/2019Prefix Type: CLEC
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Detailed Switch Info
443-879-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697DUNDALKNOCLLIKNOWN12/22/2005Prefix Type: CLEC
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Detailed Switch Info
443-879-2MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN08/07/2014Prefix Type: CLEC
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Tandem: N/A
Detailed Switch Info
443-879-3MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN02/14/2019Prefix Type: CLEC
Switch Name: N/A
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Detailed Switch Info
443-879-4MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/17/2018Prefix Type: WIRELESS
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Tandem: N/A
Detailed Switch Info
443-879-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212DUNDALKDNDLMDDNDS007/16/2003Prefix Type: RBOC
Switch Name: DUNDALK
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879-6MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN06/28/2018Prefix Type: CLEC
Switch Name: N/A
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Tandem: N/A
Detailed Switch Info
443-879-7MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN12/15/2014Prefix Type: CLEC
Switch Name: N/A
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Tandem: N/A
Detailed Switch Info
443-879-8MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN12/15/2014Prefix Type: CLEC
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Detailed Switch Info
443-879-9MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
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Detailed Switch Info
667-263MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/09/2020Prefix Type: WIRELESS
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Detailed Switch Info
Thousands block for 667-263
667-263-0MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
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Tandem: N/A
Detailed Switch Info
667-263-1MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
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Detailed Switch Info
667-263-2MDTWILIO INTERNATIONAL, INC.506JDUNDALKNOCLLIKNOWN11/25/2020Prefix Type: IPES
Switch Name: N/A
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LATA: Baltimore MD (238)
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Detailed Switch Info
667-263-3MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN06/15/2021Prefix Type: CLEC
Switch Name: N/A
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Detailed Switch Info
667-263-4MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN06/15/2021Prefix Type: CLEC
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Tandem: N/A
Detailed Switch Info
667-263-5MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-6MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN09/16/2022Prefix Type: CLEC
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Detailed Switch Info
667-263-7MDONVOY SPECTRUM, LLC (Inteliquent)624HDUNDALKNOCLLIKNOWN04/23/2021Prefix Type: WIRELESS
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Tandem: N/A
Detailed Switch Info
667-263-8MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
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Detailed Switch Info
667-263-9MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/10/2020Prefix Type: WIRELESS
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Detailed Switch Info
667-456MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT011/06/2023Prefix Type: WIRELESS
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Detailed Switch Info
Thousands block for 667-456
667-456-0MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
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Tandem: N/A
Detailed Switch Info
667-456-1MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
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Detailed Switch Info
667-456-2MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
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Detailed Switch Info
667-456-3MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
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Detailed Switch Info
667-456-9MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT011/06/2023Prefix Type: WIRELESS
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Detailed Switch Info
667-856MDTON80 COMMUNICATIONS, LLC516JDUNDALKBLTQMD01BMD03/01/2022Prefix Type: UNKNOWN
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Detailed Switch Info
Thousands block for 667-856
667-856-0MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT005/10/2022Prefix Type: WIRELESS
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Tandem: N/A
Detailed Switch Info
667-856-1MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/16/2023Prefix Type: WIRELESS
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Tandem: N/A
Detailed Switch Info
667-856-2MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-3MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
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LATA: Baltimore MD (238)
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Detailed Switch Info
667-856-4MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-5MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
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Tandem: N/A
Detailed Switch Info
667-856-6MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN05/17/2023Prefix Type: CLEC
Switch Name: N/A
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-7MDTON80 COMMUNICATIONS, LLC516JDUNDALKBLTQMD01BMD03/01/2022Prefix Type: UNKNOWN
Switch Name: N/A
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-8MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-9MDONVOY, LLC - MD (Inteliquent)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
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LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info