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
773-912 A Chicago Zone 08-Portsmouth IL CHCGILCNDS1  8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
773-912 0 Chicago Zone 08-Portsmouth IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-912 1 Chicago Zone 08-Portsmouth IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
773-912 2 Chicago Zone 08-Portsmouth IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
773-912 3 Chicago Zone 08-Portsmouth IL   6529 T-MOBILE USA, INC. 358   2007-03-19   
773-912 4 Chicago Zone 08-Portsmouth IL   667E SIGECOM, LLC DBA WOW INTERNET CABLE AND PHONE 358   2004-10-01   
773-912 5 Chicago Zone 08-Portsmouth IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
773-912 6 Chicago Zone 08-Portsmouth IL   516C AT&T CORP. 358   2006-07-07   
773-912 7 Chicago Zone 08-Portsmouth IL   6529 T-MOBILE USA, INC. 358   2007-03-19   
773-912 8 Chicago Zone 08-Portsmouth IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
773-912 9 Chicago Zone 08-Portsmouth IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.