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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-849MDVERIZON MARYLAND, INC. (Verizon Communications)9212SHERWD FORPARLMDPADS000/00/0000Prefix Type: RBOC
Switch Name: WASZ 14
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-849
410-849-0MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119SHERWD FORNOCLLIKNOWN04/14/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-1MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)7325SHERWD FORNOCLLIKNOWN07/05/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212SHERWD FORPARLMDPADS0N/APrefix Type: RBOC
Switch Name: WASZ 14
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212SHERWD FORPARLMDPADS0N/APrefix Type: RBOC
Switch Name: WASZ 14
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-4MDUS LEC OF MARYLAND, INC.2589SHERWD FORCLMAMDJTDS001/15/2004Prefix Type: CLEC
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212SHERWD FORPARLMDPADS0N/APrefix Type: RBOC
Switch Name: WASZ 14
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-6MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN05/17/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-7MDCOMCAST IP PHONE, LLC (Comcast)318JSHERWD FORNOCLLIKNOWN06/30/2005Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212SHERWD FORPARLMDPADS0N/APrefix Type: RBOC
Switch Name: WASZ 14
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-849-9MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228SHERWD FORBLTOMDKHDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-881
410-881-0MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119SHERWD FORNOCLLIKNOWN02/08/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-1MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORNOCLLIKNOWN03/04/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-2MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN02/28/2017Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-3MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-4MDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)6119SHERWD FORNOCLLIKNOWN04/16/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-5MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN03/07/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-6MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN02/19/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-7MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN12/14/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-8MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN09/17/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-881-9MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228SHERWD FORBLTOMDKHDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697SHERWD FORBLTMMDCH14Z00/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-339
443-339-0MDTELNYX LLC073HSHERWD FORNOCLLIKNOWN04/14/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-1MDCTC COMMUNICATIONS CORP. - MD (Windstream Holdings)2697SHERWD FORBLTMMDCH14ZN/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-2MDPEERLESS NETWORK OF MARYLAND, LLC568GSHERWD FORNOCLLIKNOWN10/16/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-3MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN04/22/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-4MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN04/22/2015Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-5MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN02/19/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-6MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN02/19/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-7MDCENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)508JSHERWD FORBLTMMDDN2MD05/14/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-8MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN09/03/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-339-9MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN09/03/2014Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (Lumen Technologies, Inc)6050SHERWD FORBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 443-598
443-598-0MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (Lumen Technologies, Inc)6050SHERWD FORBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-1MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (Lumen Technologies, Inc)6050SHERWD FORBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-2MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN08/08/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-3MDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)7228SHERWD FORBLTOMDKHDS009/11/2008Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-4MDGLOBAL CROSSING LOCAL SERVICES, INC. - MD (Lumen Technologies, Inc)6050SHERWD FORBLTOMDXIDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-5MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN09/17/2020Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-6MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN08/13/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-7MDBANDWIDTH.COM CLEC, LLC - MD071FSHERWD FORNOCLLIKNOWN02/28/2017Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-8MDPEERLESS NETWORK OF MARYLAND, LLC568GSHERWD FORNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-598-9MDPEERLESS NETWORK OF MARYLAND, LLC568GSHERWD FORNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT005/31/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-277
667-277-0MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT006/01/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-1MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT006/01/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-2MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT003/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-3MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT010/11/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-4MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT006/01/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-5MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT003/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-6MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT003/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-7MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT003/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-8MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT003/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-277-9MDCORE COMMUNICATIONS, INC.- MD2593SHERWD FORBLTMMD91GT003/15/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363MDONVOY, LLC - MD (Sinch)876DSHERWD FORPIVLMDPKX8X03/25/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 667-363
667-363-0MDCOMCAST IP PHONE, LLC (Comcast)318JSHERWD FORNOCLLIKNOWN06/29/2023Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-1MDONVOY SPECTRUM, LLC (Sinch)624HSHERWD FORNOCLLIKNOWN02/06/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-2MDONVOY SPECTRUM, LLC (Sinch)624HSHERWD FORNOCLLIKNOWN02/06/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-4MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN06/16/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-5MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN06/16/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-6MDONVOY, LLC - MD (Sinch)876DSHERWD FORNOCLLIKNOWN03/26/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-7MDONVOY SPECTRUM, LLC (Sinch)624HSHERWD FORNOCLLIKNOWN04/24/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
667-363-8MDTON80 COMMUNICATIONS, LLC516JSHERWD FORNOCLLIKNOWN02/25/2022Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info