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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-429MDVERIZON MARYLAND, INC. (Verizon Communications)9212WORTHINGTNRSTWMDRSDS000/00/0000Prefix Type: RBOC
Switch Name: REISTERSTOWN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-429
410-429-0MDBANDWIDTH.COM CLEC, LLC - MD071FWORTHINGTNNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-1MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNNOCLLIKNOWN03/17/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-2MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNNOCLLIKNOWN03/17/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-3MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN07/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212WORTHINGTNRSTWMDRSDS0N/APrefix Type: RBOC
Switch Name: REISTERSTOWN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212WORTHINGTNRSTWMDRSDS0N/APrefix Type: RBOC
Switch Name: REISTERSTOWN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-6MDCOMCAST IP PHONE, LLC318JWORTHINGTNNOCLLIKNOWN04/07/2006Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-7MDBANDWIDTH.COM CLEC, LLC - MD071FWORTHINGTNNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-8MDTELNYX LLC073HWORTHINGTNNOCLLIKNOWN04/14/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-429-9MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN07/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050WORTHINGTNBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-218
443-218-0MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050WORTHINGTNBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-1MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050WORTHINGTNBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-2MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119WORTHINGTNNOCLLIKNOWN02/08/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-3MDBANDWIDTH.COM CLEC, LLC - MD071FWORTHINGTNNOCLLIKNOWN08/05/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-4MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (CenturyLink, Inc)6050WORTHINGTNBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-5MDTELNYX LLC073HWORTHINGTNNOCLLIKNOWN07/14/2023Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-6MDBANDWIDTH.COM CLEC, LLC - MD071FWORTHINGTNNOCLLIKNOWN09/28/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-7MDLEVEL 3 COMMUNICATIONS, LLC - MD (CenturyLink, Inc)6119WORTHINGTNNOCLLIKNOWN10/27/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-8MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229WORTHINGTNBLTMMDSN5MD07/11/2006Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-218-9MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNNOCLLIKNOWN03/31/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNBLTMMDSNDS500/00/0000Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-222
443-222-0MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNBLTMMDSNDS503/31/2020Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-1MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNBLTMMDSNDS503/31/2020Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-2MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-3MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-4MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-5MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-6MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN03/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-7MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN03/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-8MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNBLTMMDSNDS502/06/2019Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-222-9MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNBLTMMDSNDS502/06/2019Prefix Type: CLEC
Switch Name: BRYNPKLNCM
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910WORTHINGTNHNVAMDBHAMD05/11/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-767
443-767-0MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910WORTHINGTNHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-1MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNNOCLLIKNOWN05/12/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-2MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN03/04/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-3MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNNOCLLIKNOWN05/12/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-4MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNNOCLLIKNOWN09/13/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-5MDTWILIO INTERNATIONAL, INC.506JWORTHINGTNNOCLLIKNOWN12/01/2020Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-6MDCORE COMMUNICATIONS, INC.- MD2593WORTHINGTNNOCLLIKNOWN03/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-7MDBROADVIEW NETWORKS, INC. - MD (Windstream Holdings)9170WORTHINGTNNOCLLIKNOWN08/21/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-8MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910WORTHINGTNHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-767-9MDCAVALIER TELEPHONE MID-ATLANTIC, LLC - MD (Windstream Communications)3910WORTHINGTNHNVAMDBHAMDN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325WORTHINGTNBLTMMDFMDS000/00/0000Prefix 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 443-914
443-914-0MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC7229WORTHINGTNBLTMMDCDDS011/04/2002Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-1MDUS LEC OF MARYLAND, INC.2589WORTHINGTNCLMAMDJTDS012/16/2003Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-2MDBANDWIDTH.COM CLEC, LLC - MD071FWORTHINGTNNOCLLIKNOWN06/11/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-3MDBANDWIDTH.COM CLEC, LLC - MD071FWORTHINGTNNOCLLIKNOWN06/09/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-4MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228WORTHINGTNBLTOMDKHDS003/16/2017Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-5MDBALTIMORE-WASHINGTON TELEPHONE (BWT)8697WORTHINGTNNOCLLIKNOWN05/27/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-6MDCENTURYLINK COMMUNICATIONS, LLC (CenturyLink, Inc)508JWORTHINGTNBLTMMDDN2MD05/23/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-7MDPEERLESS NETWORK OF MARYLAND, LLC568GWORTHINGTNNOCLLIKNOWN04/05/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-8MDPEERLESS NETWORK OF MARYLAND, LLC568GWORTHINGTNNOCLLIKNOWN04/05/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-914-9MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325WORTHINGTNBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-887MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNPIVLMDPKX8X03/25/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-887
667-887-1MDONVOY SPECTRUM, LLC (Inteliquent)624HWORTHINGTNNOCLLIKNOWN02/05/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-887-2MDONVOY SPECTRUM, LLC (Inteliquent)624HWORTHINGTNNOCLLIKNOWN02/05/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-887-6MDONVOY, LLC - MD (Inteliquent)876DWORTHINGTNPIVLMDPKX8X03/26/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-887-7MDONVOY SPECTRUM, LLC (Inteliquent)624HWORTHINGTNNOCLLIKNOWN04/24/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
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