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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-221 A Lockport IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-221 0 Lockport IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-221 1 Lockport IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-221 2 Lockport IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-221 3 Lockport IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-221 4 Lockport IL EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2004-05-29   
815-221 5 Lockport IL EGVGILIFDS0  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2004-10-17   
815-221 6 Lockport IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2005-03-19   
815-221 7 Lockport IL ELGNILOT2MD  5562 METROPCS, INC. 358   2017-04-01   
815-221 8 Lockport IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-02-14   
815-221 9 Lockport IL ELGNILOT2MD  5562 METROPCS, INC. 358   2018-11-15   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.