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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-457MDVERIZON MARYLAND, INC. (Verizon Communications)9212DARLINGTONDRTNMDDRRS000/00/0000Prefix Type: RBOC
Switch Name: DARLINGTON
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-457
410-457-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212DARLINGTONDRTNMDDRRS0N/APrefix Type: RBOC
Switch Name: DARLINGTON
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-1MDATX TELECOMMUNICATIONS SERVICES, LTD.1958DARLINGTONNOCLLIKNOWN02/03/2003Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212DARLINGTONDRTNMDDRRS0N/APrefix Type: RBOC
Switch Name: DARLINGTON
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-3MDONVOY, LLC - MD (Sinch)876DDARLINGTONNOCLLIKNOWN09/12/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212DARLINGTONDRTNMDDRRS0N/APrefix Type: RBOC
Switch Name: DARLINGTON
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212DARLINGTONDRTNMDDRRS0N/APrefix Type: RBOC
Switch Name: DARLINGTON
Switch Type: WECO 5ESS Remote (5A RSM)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-6MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONNOCLLIKNOWN03/01/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-7MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119DARLINGTONNOCLLIKNOWN02/06/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-8MDARMSTRONG TELECOMMUNICATIONS, INC. - MD420CDARLINGTONNOCLLIKNOWN08/11/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-457-9MDPEERLESS NETWORK OF MARYLAND, LLC568GDARLINGTONNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325DARLINGTONBLTMMDFMDS000/00/0000Prefix 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 443-267
443-267-0MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325DARLINGTONBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-1MDUS LEC OF MARYLAND, INC.2589DARLINGTONCLMAMDJTDS001/15/2004Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-2MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN07/19/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-3MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228DARLINGTONBLTOMDKHDS012/09/2008Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-4MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-5MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119DARLINGTONNOCLLIKNOWN11/29/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-6MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN07/05/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-7MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN02/10/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-8MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-267-9MDPEERLESS NETWORK OF MARYLAND, LLC568GDARLINGTONNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697DARLINGTONBLTMMDCH14Z00/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-585
443-585-0MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN04/21/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697DARLINGTONBLTMMDCH14ZN/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-2MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN04/21/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-3MDONVOY, LLC - MD (Sinch)876DDARLINGTONNOCLLIKNOWN03/16/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-4MDONVOY, LLC - MD (Sinch)876DDARLINGTONNOCLLIKNOWN03/16/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-5MDBALTIMORE-WASHINGTON TELEPHONE (BWT)8697DARLINGTONNOCLLIKNOWN05/18/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-6MDTELNYX LLC073HDARLINGTONNOCLLIKNOWN04/14/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-7MDCENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)508JDARLINGTONBLTMMDDN2MD05/14/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-8MDONVOY, LLC - MD (Sinch)876DDARLINGTONNOCLLIKNOWN08/26/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-585-9MDONVOY, LLC - MD (Sinch)876DDARLINGTONNOCLLIKNOWN08/26/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONBLTMMDCH45Z06/19/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-268
667-268-0MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONBLTMMDCH45Z06/20/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-1MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONBLTMMDCH45Z12/15/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-3MDONVOY SPECTRUM, LLC (Sinch)624HDARLINGTONNOCLLIKNOWN04/23/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-4MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONBLTMMDCH45Z12/28/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-5MDONVOY SPECTRUM, LLC (Sinch)624HDARLINGTONNOCLLIKNOWN10/22/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-6MDONVOY SPECTRUM, LLC (Sinch)624HDARLINGTONNOCLLIKNOWN10/22/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-7MDONVOY, LLC - MD (Sinch)876DDARLINGTONNOCLLIKNOWN11/07/2022Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-268-8MDTON80 COMMUNICATIONS, LLC516JDARLINGTONNOCLLIKNOWN02/28/2022Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-463MDFIVE9, INC.598JDARLINGTONBLTQMD01EMD12/27/2023Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-463
667-463-0MDFIVE9, INC.598JDARLINGTONBLTQMD01EMD12/27/2023Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-463-9MDPEERLESS NETWORK OF MARYLAND, LLC568GDARLINGTONNOCLLIKNOWN05/21/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT006/04/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-866
667-866-0MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT006/06/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-1MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT006/06/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-2MDPEERLESS NETWORK OF MARYLAND, LLC568GDARLINGTONNOCLLIKNOWN02/07/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-3MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT003/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-4MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT006/06/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-5MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT003/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-6MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT003/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-7MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT003/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-8MDBANDWIDTH.COM CLEC, LLC - MD071FDARLINGTONNOCLLIKNOWN05/01/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-866-9MDCORE COMMUNICATIONS, INC.- MD2593DARLINGTONBLTMMD91GT003/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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