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: 790

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-790 A Chicago Zone 03-Kildare IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-790 0 Chicago Zone 03-Kildare IL CHCGILMF3MD  6529 T-MOBILE USA, INC. 358   2007-06-28   
773-790 1 Chicago Zone 03-Kildare IL ELGNILOTGT5  5562 METROPCS, INC. 358   2007-06-28   
773-790 2 Chicago Zone 03-Kildare IL CHCGILMF3MD  6529 T-MOBILE USA, INC. 358   2007-06-28   
773-790 3 Chicago Zone 03-Kildare IL CHCGILMF3MD  6529 T-MOBILE USA, INC. 358   2007-06-28   
773-790 4 Chicago Zone 03-Kildare IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
773-790 5 Chicago Zone 03-Kildare IL CHCGILMF3MD  6529 T-MOBILE USA, INC. 358   2007-06-28   
773-790 6 Chicago Zone 03-Kildare IL CHCGILMF3MD  6529 T-MOBILE USA, INC. 358   2007-06-28   
773-790 7 Chicago Zone 03-Kildare IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-02-17   
773-790 8 Chicago Zone 03-Kildare IL ELGNILOTGT5  5562 METROPCS, INC. 358   2007-11-09   
773-790 9 Chicago Zone 03-Kildare IL CHCGILMF3MD  6529 T-MOBILE USA, INC. 358   2007-11-09   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.