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: CHCGILNEXJX

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-269 0 Danforth IL 318J COMCAST IP PHONE, LLC 358   2020-03-13   
815-271 5 McHenry IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-277 2 Frankfort IL 318J COMCAST IP PHONE, LLC 358   2008-04-01   
815-280 5 Joliet IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-293 6 Romeoville IL 318J COMCAST IP PHONE, LLC 358   2008-10-05   
815-304 4 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2006-05-29   
815-304 5 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2005-08-01   
815-308 5 Woodstock IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-320 3 New Lenox IL 318J COMCAST IP PHONE, LLC 358   2012-07-02   
815-322 0 McHenry IL 318J COMCAST IP PHONE, LLC 358   2016-05-27   
815-322 2 McHenry IL 318J COMCAST IP PHONE, LLC 358   2008-07-18   
815-331 8 McHenry IL 318J COMCAST IP PHONE, LLC 358   2012-06-19   
815-390 A Braidwood IL 318J COMCAST IP PHONE, LLC 358      
815-390 5 Braidwood IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-401 5 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2006-05-29   
815-401 7 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2013-01-12   
815-408 5 Utica IL 318J COMCAST IP PHONE, LLC 358   2006-08-09   
815-421 4 Herscher IL 318J COMCAST IP PHONE, LLC 358   2005-08-01   
815-422 5 St Anne IL 318J COMCAST IP PHONE, LLC 358   2005-08-01   
815-448 0 Mazon IL 318J COMCAST IP PHONE, LLC 358   2012-03-07   
815-498 5 Somonauk IL 318J COMCAST IP PHONE, LLC 358   2023-03-13   
815-498 6 Somonauk IL 318J COMCAST IP PHONE, LLC 358   2005-10-07   
815-506 2 Union IL 318J COMCAST IP PHONE, LLC 358   2010-12-31   
815-513 3 Morris IL 318J COMCAST IP PHONE, LLC 358   2012-05-05   
815-513 5 Morris IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-518 5 Coal City IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-523 7 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2008-12-12   
815-524 3 Lockport IL 318J COMCAST IP PHONE, LLC 358   2006-09-10   
815-524 4 Lockport IL 318J COMCAST IP PHONE, LLC 358   2006-09-10   
815-524 5 Lockport IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-526 3 Crystal Lake IL 318J COMCAST IP PHONE, LLC 358   2010-05-14   
815-527 7 Woodstock IL 318J COMCAST IP PHONE, LLC 358   2007-09-07   
815-534 5 Frankfort IL 318J COMCAST IP PHONE, LLC 358   2005-07-01   
815-552 2 Lockport IL 318J COMCAST IP PHONE, LLC 358   2011-12-06   
815-552 3 Lockport IL 318J COMCAST IP PHONE, LLC 358   2013-10-25   
815-556 8 Plainfield IL 318J COMCAST IP PHONE, LLC 358   2006-07-15   
815-570 2 Sandwich IL 318J COMCAST IP PHONE, LLC 358   2005-10-07   
815-581 A Spring Grove IL 318J COMCAST IP PHONE, LLC 358      
815-581 0 Spring Grove IL 318J COMCAST IP PHONE, LLC 358   2005-11-27   
815-582 3 Joliet IL 318J COMCAST IP PHONE, LLC 358   2006-03-15   
815-582 4 Joliet IL 318J COMCAST IP PHONE, LLC 358   2006-03-15   
815-585 7 Morris IL 318J COMCAST IP PHONE, LLC 358   2014-09-25   
815-596 4 Marengo IL 318J COMCAST IP PHONE, LLC 358   2021-07-24   
815-614 3 Kankakee IL 318J COMCAST IP PHONE, LLC 358   2007-09-01   
815-630 2 Joliet IL 318J COMCAST IP PHONE, LLC 358   2007-01-18   
815-630 3 Joliet IL 318J COMCAST IP PHONE, LLC 358   2007-01-18   
815-630 4 Joliet IL 318J COMCAST IP PHONE, LLC 358   2006-10-29   
815-630 5 Joliet IL 318J COMCAST IP PHONE, LLC 358   2006-10-29   
815-648 9 Hebron IL 318J COMCAST IP PHONE, LLC 358   2017-07-13   
815-655 4 Coal City IL 318J COMCAST IP PHONE, LLC 358   2023-07-03   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 >>

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.