Rate Center Name: , State:
If you were a paid member, you could be loading this into any version of Excel or Access (or any other software that understands CSV) right now for less than you paid for your breakfast or lunch today. If you are a member please login to access this and other functionality.
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 (Sinch)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 (Lumen Technologies, 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 (Sinch)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 (Lumen Technologies, 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 (Sinch)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 (Lumen Technologies, 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN02/11/2005Prefix 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN04/10/2019Prefix 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN08/01/2007Prefix 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 (Lumen Technologies, 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
443-399-0MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN09/27/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-1MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN09/27/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-399-2MDONVOY, LLC - MD (Sinch)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 (Lumen Technologies, 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 (Lumen Technologies, 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN03/07/2008Prefix 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 (Sinch)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 (Sinch)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 (Lumen Technologies, 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 (Lumen Technologies, 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN09/06/2006Prefix 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN09/06/2006Prefix 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN01/07/2013Prefix 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN01/21/2014Prefix 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 (Sinch)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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN04/11/2016Prefix 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, LLC (Comcast)318JDUNDALKNOCLLIKNOWN05/01/2015Prefix 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
443-549-7MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN10/04/2024Prefix Type: CLEC
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.- MD2593DUNDALKBLTMMD91GT000/00/0000Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-586
443-586-0MDONVOY, LLC - MD (Sinch)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 (Sinch)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.- MD2593DUNDALKBLTMMD91GT010/10/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-3MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKBLTMMD91GT010/10/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-4MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKBLTMMD91GT010/10/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-5MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/27/2017Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-6MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/27/2017Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-7MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN02/01/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-8MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/03/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-586-9MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN08/22/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMD05/10/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-696
443-696-0MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-1MDONVOY SPECTRUM, LLC (Sinch)624HDUNDALKNOCLLIKNOWN10/26/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-2MDTERRA NOVA TELECOM INC.145JDUNDALKNOCLLIKNOWN08/13/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-3MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-4MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228DUNDALKBLTOMDKHDS009/11/2008Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-5MDONVOY SPECTRUM, LLC (Sinch)624HDUNDALKNOCLLIKNOWN10/26/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-6MDCORE COMMUNICATIONS, INC.- MD2593DUNDALKNOCLLIKNOWN10/10/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-7MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-8MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN08/24/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-696-9MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910DUNDALKHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879MDVERIZON 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
Thousands block for 443-879
443-879-0MDCORE 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
443-879-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697DUNDALKNOCLLIKNOWN12/22/2005Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879-2MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN08/07/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879-3MDBANDWIDTH.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
443-879-4MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/17/2018Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
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
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879-7MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN12/15/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879-8MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN12/15/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-879-9MDBANDWIDTH.COM CLEC, LLC - MD071FDUNDALKNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/09/2020Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-263
667-263-0MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-1MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-3MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN06/15/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-4MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN06/15/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-5MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-6MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN09/16/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-7MDONVOY SPECTRUM, LLC (Sinch)624HDUNDALKNOCLLIKNOWN04/23/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-8MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN09/14/2021Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-263-9MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/10/2020Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT011/06/2023Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-456
667-456-0MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-1MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-2MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-3MDCOMMIO, LLC939HDUNDALKNOCLLIKNOWN11/28/2023Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-4MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN11/08/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-5MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN11/08/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-6MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN11/08/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-7MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT010/02/2024Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-8MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN09/27/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-456-9MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT011/06/2023Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856MDTON80 COMMUNICATIONS, LLC516JDUNDALKBLTQMD01BMD03/01/2022Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-856
667-856-0MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT005/10/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-1MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036DUNDALKCLMAMDORGT003/16/2023Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-2MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-3MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-4MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-5MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-6MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN05/17/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-7MDTON80 COMMUNICATIONS, LLC516JDUNDALKBLTQMD01BMD03/01/2022Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-8MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-856-9MDONVOY, LLC - MD (Sinch)876DDUNDALKNOCLLIKNOWN07/13/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
This information is not guaranteed to be accurate. User assumes all risk for any loss or gain resulting from use of this data.
Although I strive for accuracy and prompt updates of changed information, it is possible that there may be errors. If you see one, could you please report it?
Please report all errors, flames, questions, suggestions, and thanks to Paul Timmins
Please see the Frequently Asked Questions page if you have any questions.
Copyright ©2001-2023, Paul Timmins/Timmins Technologies, LLC. All rights reserved
Website Design and User Interface ©2010, Adam Botbyl/Revolutionary Solutions, LLC.
Colocation generously provided by Clear Rate Communications, Inc
Has this site changed your life? Made your job easier? I always love Fanmail and Suggestions.