Rate Center Name: , State/Province:
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.

🔎 Tip: Click any Company, OCN, Rate Center, or CLLI to explore related telecom data

npa-nxxStateCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
410-357MDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212PARKTONPKTNMDPKRS000/00/0000Prefix Type: RBOC
Switch Name: PARKTON
Switch Type: WECO 5ESS Remote (5B RSM)
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: PKTNMDPKRS0))
410-357 is split into 1,000-number blocks - detail below
410-357-0XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212PARKTONPKTNMDPKRS0N/APrefix Type: RBOC
Switch Name: PARKTON
Switch Type: WECO 5ESS Remote (5B RSM)
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: PKTNMDPKRS0))
410-357-1XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FPARKTONNOCLLIKNOWN11/12/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
410-357-2XXXMDCORE COMMUNICATIONS, INC.- MDN/A2593PARKTONNOCLLIKNOWN07/12/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
410-357-3XXXMDCOMCAST IP PHONE, LLC (Comcast)0008497687RMD0003552318JPARKTONNOCLLIKNOWN04/24/2012Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
410-357-4XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212PARKTONPKTNMDPKRS0N/APrefix Type: RBOC
Switch Name: PARKTON
Switch Type: WECO 5ESS Remote (5B RSM)
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: PKTNMDPKRS0))
410-357-5XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212PARKTONPKTNMDPKRS0N/APrefix Type: RBOC
Switch Name: PARKTON
Switch Type: WECO 5ESS Remote (5B RSM)
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: PKTNMDPKRS0))
410-357-6XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FPARKTONNOCLLIKNOWN01/26/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
410-357-7XXXMDCORE COMMUNICATIONS, INC.- MDN/A2593PARKTONNOCLLIKNOWN07/12/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
410-357-8XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212PARKTONPKTNMDPKRS0N/APrefix Type: RBOC
Switch Name: PARKTON
Switch Type: WECO 5ESS Remote (5B RSM)
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: PKTNMDPKRS0))
410-357-9XXXMDVERIZON MARYLAND, INC. (Verizon Communications)0002166825RMD00029419212PARKTONPKTNMDPKRS0N/APrefix Type: RBOC
Switch Name: PARKTON
Switch Type: WECO 5ESS Remote (5B RSM)
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: PKTNMDPKRS0))
443-238MDPAETEC ITEL, LLCN/A829JPARKTONBLTMMDCH14Z00/00/0000Prefix Type: IPES
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH14Z))
443-238 is split into 1,000-number blocks - detail below
443-238-0XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONNOCLLIKNOWN02/08/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-238-1XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONNOCLLIKNOWN02/24/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-238-2XXXMDPAETEC ITEL, LLCN/A829JPARKTONBLTMMDCH14ZN/APrefix Type: IPES
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH14Z))
443-238-3XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONNOCLLIKNOWN02/24/2016Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-238-4XXXMDTERRA NOVA TELECOM INC.0021193057RMD0001495145JPARKTONNOCLLIKNOWN01/08/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-238-5XXXMDCOMCAST IP PHONE, LLC (Comcast)0008497687RMD0003552318JPARKTONNOCLLIKNOWN09/03/2015Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-238-6XXXMDCORE COMMUNICATIONS, INC.- MDN/A2593PARKTONNOCLLIKNOWN05/23/2018Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-238-7XXXMDCENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)0031422439RMD0006976508JPARKTONBLTMMDDN2MD05/14/2014Prefix Type: IPES
Switch Name: GLENBURNIE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDDN2MD))
443-238-8XXXMDTELNYX LLC0018998724RMD0001645073HPARKTONBLTMMDCHXTX04/14/2017Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCHXTX))
443-238-9XXXMDTERRA NOVA TELECOM INC.0021193057RMD0001495145JPARKTONNOCLLIKNOWN08/14/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-491MDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTOMDXIDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-491 is split into 1,000-number blocks - detail below
443-491-2XXXMDPAETEC ITEL, LLCN/A829JPARKTONBLTMMDCH14Z09/08/2005Prefix Type: IPES
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH14Z))
443-491-3XXXMDCOMCAST IP PHONE, LLC (Comcast)0008497687RMD0003552318JPARKTONNOCLLIKNOWN02/11/2005Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-491-7XXXMDMCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (Verizon Communications)0004999405RMD00029577228PARKTONBLTOMDKHDS006/30/2020Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDKHDS0))
443-491-8XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FPARKTONNOCLLIKNOWN10/19/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-491-9XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTOMDXIDS009/11/2012Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTOMDXIDS0))
443-672MDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)0004274114RMD00038977325PARKTONBLTMMDFMDS000/00/0000Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDFMDS0))
443-672 is split into 1,000-number blocks - detail below
443-672-0XXXMDCORE COMMUNICATIONS, INC.- MDN/A2593PARKTONNOCLLIKNOWN03/04/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-1XXXMDPAETEC ITEL, LLCN/A829JPARKTONCLMAMDJTDSA01/08/2004Prefix Type: IPES
Switch Name: COLUMBIA
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: CLMAMDJTDSA))
443-672-2XXXMDLEVEL 3 COMMUNICATIONS, LLC - MD (Lumen Technologies, Inc)N/A6119PARKTONNOCLLIKNOWN01/31/2006Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-3XXXMDCORE COMMUNICATIONS, INC.- MDN/A2593PARKTONNOCLLIKNOWN03/14/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-4XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-5XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONNOCLLIKNOWN02/06/2019Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-6XXXMDPEERLESS NETWORK OF MARYLAND, LLCN/A568GPARKTONNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-7XXXMDPEERLESS NETWORK OF MARYLAND, LLCN/A568GPARKTONNOCLLIKNOWN04/04/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-8XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FPARKTONNOCLLIKNOWN09/14/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-672-9XXXMDTELEPORT COMMUNICATIONS AMERICA, LLC - MD (AT&T)0004274114RMD00038977325PARKTONBLTMMDFMDS0N/APrefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDFMDS0))
667-329MDTELNYX LLC0018998724RMD0001645073HPARKTONBLTMMDCHXTX06/23/2021Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCHXTX))
667-329 is split into 1,000-number blocks - detail below
667-329-0XXXMDTELNYX LLC0018998724RMD0001645073HPARKTONBLTMMDCHXTX06/23/2021Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCHXTX))
667-329-1XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONNOCLLIKNOWN03/26/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
667-329-6XXXMDONVOY SPECTRUM, LLC (Sinch)0024415002RMD0002045624HPARKTONNOCLLIKNOWN01/06/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
667-329-7XXXMDONVOY SPECTRUM, LLC (Sinch)0024415002RMD0002045624HPARKTONNOCLLIKNOWN01/06/2022Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
667-329-9XXXMDPEERLESS NETWORK OF MARYLAND, LLCN/A568GPARKTONNOCLLIKNOWN02/22/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
667-370MDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTMMDCH42Z03/25/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH42Z))
667-370 is split into 1,000-number blocks - detail below
667-370-0XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTMMDCH42Z03/31/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH42Z))
667-370-1XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTMMDCH42Z03/31/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH42Z))
667-370-2XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTMMDCH42Z04/21/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH42Z))
667-370-3XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTMMDCH42Z04/21/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH42Z))
667-370-6XXXMDONVOY SPECTRUM, LLC (Sinch)0024415002RMD0002045624HPARKTONNOCLLIKNOWN04/24/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
667-370-7XXXMDONVOY, LLC - MD (Sinch)0004323028RMD0001966876DPARKTONBLTMMDCH42Z03/26/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: BLTMMDCH42Z))
667-370-8XXXMDPEERLESS NETWORK OF MARYLAND, LLCN/A568GPARKTONNOCLLIKNOWN11/19/2024Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
667-370-9XXXMDBANDWIDTH.COM CLEC, LLC - MD0017042060RMD0003709071FPARKTONNOCLLIKNOWN12/06/2021Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Baltimore MD (238)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
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
L'exactitude de ces renseignements n'est pas garantie. L'utilisateur assume l'entière responsabilité des pertes ou des gains découlant de l'utilisation de ces données.
Bien que je m'efforce d'assurer l'exactitude des informations et de les mettre à jour rapidement, des erreurs peuvent subsister. Si vous en voyez une, veuillez me la signaler.
Veuillez adresser vos commentaires, remarques, questions, suggestions et remerciements à Paul Timmins
Please see the Frequently Asked Questions page if you have any questions.
Copyright ©2001-2026, 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.