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: 770

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-770 A Harvard IL ALTSIL010MD  462C CHARTER FIBERLINK - ILLINOIS, LLC - IL 358      
815-770 0 Harvard IL ALTSIL010MD  462C CHARTER FIBERLINK - ILLINOIS, LLC - IL 358   2006-04-07   
815-770 1 Harvard IL CHCGILWUSMD  145J TERRA NOVA TELECOM INC. 358   2022-10-07   
815-770 2 Harvard IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-10-03   
815-770 3 Harvard IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-10-03   
815-770 4 Harvard IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2012-02-01   
815-770 5 Harvard IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-07-11   
815-770 6 Harvard IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-03-28   
815-770 7 Harvard IL CHCGIL24DS6  224C ONVOY, LLC 358   2012-09-29   
815-770 8 Harvard IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2006-08-06   
815-770 9 Harvard IL ALTSIL010MD  462C CHARTER FIBERLINK - ILLINOIS, LLC - IL 358   2014-07-27   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.