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.

NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 526

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-526 A Crystal Lake IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-526 0 Crystal Lake IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-11-27   
815-526 1 Crystal Lake IL CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2011-01-01   
815-526 2 Crystal Lake IL CHCGILMF4MD  5562 METROPCS, INC. 358   2005-07-17   
815-526 3 Crystal Lake IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2010-05-14   
815-526 4 Crystal Lake IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-526 5 Crystal Lake IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2006-01-27   
815-526 6 Crystal Lake IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2004-11-22   
815-526 7 Crystal Lake IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2005-08-11   
815-526 8 Crystal Lake IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2005-08-11   
815-526 9 Crystal Lake IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2005-08-11   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.