Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: CHCGILWUX6X

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-271 3 McHenry IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-277 3 Frankfort IL 460K FIRST COMMUNICATIONS, LLC 358   2004-07-15   
815-277 8 Frankfort IL 460K FIRST COMMUNICATIONS, LLC 358   2005-03-19   
815-280 4 Joliet IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-293 5 Romeoville IL 460K FIRST COMMUNICATIONS, LLC 358   2014-09-20   
815-306 2 Lockport IL 460K FIRST COMMUNICATIONS, LLC 358   2004-07-15   
815-306 6 Lockport IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-308 6 Woodstock IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-313 3 Ottawa IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-314 2 Manhattan IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-314 5 Manhattan IL 460K FIRST COMMUNICATIONS, LLC 358   2007-11-20   
815-317 2 Crescent City IL 460K FIRST COMMUNICATIONS, LLC 358   2005-03-19   
815-318 3 Morris IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-20   
815-318 4 Morris IL 460K FIRST COMMUNICATIONS, LLC 358   2005-03-19   
815-321 5 Woodstock IL 460K FIRST COMMUNICATIONS, LLC 358   2005-07-16   
815-322 5 McHenry IL 460K FIRST COMMUNICATIONS, LLC 358   2005-03-19   
815-326 6 Oglesby IL 460K FIRST COMMUNICATIONS, LLC 358   2003-07-07   
815-330 A Crescent City IL 460K FIRST COMMUNICATIONS, LLC 358      
815-339 7 Granville IL 460K FIRST COMMUNICATIONS, LLC 358   2004-02-04   
815-348 4 Kankakee IL 460K FIRST COMMUNICATIONS, LLC 358   2010-04-10   
815-349 3 McHenry IL 460K FIRST COMMUNICATIONS, LLC 358   2006-05-08   
815-372 6 Romeoville IL 460K FIRST COMMUNICATIONS, LLC 358   2014-09-20   
815-404 5 Crystal Lake IL 460K FIRST COMMUNICATIONS, LLC 358   2005-02-26   
815-407 2 Romeoville IL 460K FIRST COMMUNICATIONS, LLC 358   2014-09-20   
815-410 2 La Salle IL 460K FIRST COMMUNICATIONS, LLC 358   2003-07-07   
815-410 6 La Salle IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-22   
815-410 7 La Salle IL 460K FIRST COMMUNICATIONS, LLC 358   2005-03-19   
815-412 6 Frankfort IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-413 A Morris IL 460K FIRST COMMUNICATIONS, LLC 358      
815-416 6 Morris IL 460K FIRST COMMUNICATIONS, LLC 358   2006-05-08   
815-417 7 Braidwood IL 460K FIRST COMMUNICATIONS, LLC 358   2007-10-05   
815-418 A Manhattan IL 460K FIRST COMMUNICATIONS, LLC 358      
815-418 1 Manhattan IL 460K FIRST COMMUNICATIONS, LLC 358      
815-421 5 Herscher IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-422 4 St Anne IL 460K FIRST COMMUNICATIONS, LLC 358   2003-07-03   
815-424 7 Elwood IL 460K FIRST COMMUNICATIONS, LLC 358   2004-02-04   
815-430 A McHenry IL 460K FIRST COMMUNICATIONS, LLC 358      
815-448 3 Mazon IL 460K FIRST COMMUNICATIONS, LLC 358   2006-07-30   
815-460 A Joliet IL 460K FIRST COMMUNICATIONS, LLC 358      
815-463 3 New Lenox IL 460K FIRST COMMUNICATIONS, LLC 358   2009-04-17   
815-465 3 Grant Park IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-465 7 Grant Park IL 460K FIRST COMMUNICATIONS, LLC 358   2003-07-03   
815-473 5 Woodland IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-473 7 Woodland IL 460K FIRST COMMUNICATIONS, LLC 358   2004-02-07   
815-486 4 Donovan IL 460K FIRST COMMUNICATIONS, LLC 358   2004-11-25   
815-487 A Plainfield IL 460K FIRST COMMUNICATIONS, LLC 358      
815-496 8 Sheridan IL 460K FIRST COMMUNICATIONS, LLC 358   2004-02-07   
815-498 8 Somonauk IL 460K FIRST COMMUNICATIONS, LLC 358   2004-02-07   
815-502 A Woodstock IL 460K FIRST COMMUNICATIONS, LLC 358      
815-504 A Gardner IL 460K FIRST COMMUNICATIONS, LLC 358      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.