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: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 790

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-790 A Charleston IL MTONILXCX4X  6529 T-MOBILE USA, INC. 976      
217-790 0 Charleston IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 976   2020-08-18   
217-790 1 Charleston IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 976   2022-01-31   
217-790 2 Charleston IL   6529 T-MOBILE USA, INC. 976   2022-01-31   
217-790 3 Charleston IL   224C ONVOY, LLC 976   2021-02-26   
217-790 4 Charleston IL   224C ONVOY, LLC 976   2021-02-26   
217-790 5 Charleston IL   6529 T-MOBILE USA, INC. 976   2021-12-16   
217-790 6 Charleston IL   224C ONVOY, LLC 976   2020-10-10   
217-790 7 Charleston IL   6529 T-MOBILE USA, INC. 976   2017-11-24   
217-790 8 Charleston IL   6529 T-MOBILE USA, INC. 976   2017-11-24   
217-790 9 Charleston IL   6529 T-MOBILE USA, INC. 976   2017-11-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.