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
773-877 A Chicago Zone 03-Kildare IL CHCGILMFCM3  6529 T-MOBILE USA, INC. 358   2006-09-04   
773-877 0 Chicago Zone 03-Kildare IL   6529 T-MOBILE USA, INC. 358   2006-09-04   
773-877 1 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 2 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 3 Chicago Zone 03-Kildare IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-10-25   
773-877 4 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 5 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 6 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 7 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 8 Chicago Zone 03-Kildare IL   6664 SPRINT SPECTRUM L.P. 358   2007-07-23   
773-877 9 Chicago Zone 03-Kildare IL   6529 T-MOBILE USA, INC. 358   2006-09-04   

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

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.