Input a CLLI:

Tip: A Partial CLLI can be entered, but must contain a minimum of the first 6 characters. I.E. 'DLLSTX'

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
219-655INTELEPORT COMMUNICATIONS AMERICA, LLC - IN (AT&T)0004274114RMD00038977314WHITINGCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
219-655 is split into 1,000-number blocks - detail below
219-655-0XXXINTELEPORT COMMUNICATIONS AMERICA, LLC - IN (AT&T)0004274114RMD00038977314WHITINGCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-549ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS709/25/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-549 is split into 1,000-number blocks - detail below
312-549-3XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS709/28/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-549-4XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS709/28/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-549-5XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS709/28/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-549-6XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS709/28/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-549-7XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS709/28/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-596ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-843ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS703/12/2014Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-843 is split into 1,000-number blocks - detail below
312-843-5XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS703/13/2014Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
312-843-6XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN01CHCGILCLDS703/13/2014Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-412ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136BENSENVLCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-412 is split into 1,000-number blocks - detail below
630-412-4XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136BENSENVLCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-423ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136AURORACHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-423 is split into 1,000-number blocks - detail below
630-423-0XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136AURORACHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-423-4XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136AURORACHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-423-9XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136AURORACHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-425ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136BATAVIACHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-425 is split into 1,000-number blocks - detail below
630-425-1XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136BATAVIACHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-490ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136LA GRANGECHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-490 is split into 1,000-number blocks - detail below
630-490-0XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136LA GRANGECHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-519ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136LOMBARDCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-519 is split into 1,000-number blocks - detail below
630-519-0XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136LOMBARDCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-755ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136LEMONTCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-755 is split into 1,000-number blocks - detail below
630-755-9XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136LEMONTCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-912ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136ROSELLECHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
630-912 is split into 1,000-number blocks - detail below
630-912-1XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136ROSELLECHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
708-898ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICAGOHTSCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
708-898 is split into 1,000-number blocks - detail below
708-898-3XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICAGOHTSCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
708-898-9XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICAGOHTSCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
708-907ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136OAK LAWNCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
708-907 is split into 1,000-number blocks - detail below
708-907-4XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136OAK LAWNCHCGILCLDS703/05/2015Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
708-907-7XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136OAK LAWNCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
773-644ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN02CHCGILCLDS701/05/2011Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
773-644 is split into 1,000-number blocks - detail below
773-644-2XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN02CHCGILCLDS701/10/2011Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
815-526ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CRYSTAL LKCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
815-526 is split into 1,000-number blocks - detail below
815-526-4XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CRYSTAL LKCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
815-527ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136WOODSTOCKCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
815-527 is split into 1,000-number blocks - detail below
815-527-9XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136WOODSTOCKCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
815-528ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136MCHENRYCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
815-528 is split into 1,000-number blocks - detail below
815-528-9XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136MCHENRYCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
847-231ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136GRAYSLAKECHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
847-231 is split into 1,000-number blocks - detail below
847-231-1XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136GRAYSLAKECHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
847-379ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136ZIONCHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
847-379 is split into 1,000-number blocks - detail below
847-379-0XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136ZIONCHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
847-629ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136FOX LAKECHCGILCLDS700/00/0000Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
847-629 is split into 1,000-number blocks - detail below
847-629-1XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136FOX LAKECHCGILCLDS7N/APrefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
872-241ILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN02CHCGILCLDS708/15/2014Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
872-241 is split into 1,000-number blocks - detail below
872-241-6XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN02CHCGILCLDS708/15/2014Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
872-241-7XXXILTELEPORT COMMUNICATIONS AMERICA, LLC - IL (AT&T)0004274114RMD00038977136CHICGOZN02CHCGILCLDS708/15/2014Prefix Type: CLEC
Switch Name: CHICAGO
Switch Type: WECO 5ESS (Digital)
LATA: Chicago IL METRO (358)
Tandem: N/A
🔧 Explore Switch(CLLI: CHCGILCLDS7))
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.