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: 773 [Rate centres in NPA 773] [Dial plan for NPA 773]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-598 A Chicago Zone 04-Humboldt IL EGVGILIFDS0  7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
773-598 0 Chicago Zone 04-Humboldt IL   6529 T-MOBILE USA, INC. 358   2006-12-27   
773-598 1 Chicago Zone 04-Humboldt IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
773-598 2 Chicago Zone 04-Humboldt IL   7196 MCI WORLDCOM COMMUNICATIONS, INC. - IL 358      
773-598 3 Chicago Zone 04-Humboldt IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2007-03-10   
773-598 4 Chicago Zone 04-Humboldt IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-10-28   
773-598 5 Chicago Zone 04-Humboldt IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-03-13   
773-598 6 Chicago Zone 04-Humboldt IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-07-15   
773-598 7 Chicago Zone 04-Humboldt IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2018-07-15   
773-598 8 Chicago Zone 04-Humboldt IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-09-10   
773-598 9 Chicago Zone 04-Humboldt IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-06-13   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.