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: 256 [Rate centres in NPA 256] [Dial plan for NPA 256]

NXX: 371

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-371 A Anniston AL BRHMALMT92Z  7475 POWERTEL BIRMINGHAM LICENSES, INC. 476      
256-371 0 Anniston AL BRHMALMT92Z  7475 POWERTEL BIRMINGHAM LICENSES, INC. 476      
256-371 1 Anniston AL BRHMALXSGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 476   2020-01-17   
256-371 2 Anniston AL BRHMALXSGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 476   2020-01-17   
256-371 3 Anniston AL BRHMALXSGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 476   2020-01-17   
256-371 4 Anniston AL BRHMALMT32Z  604E ONVOY, LLC - AL 476   2020-01-04   
256-371 5 Anniston AL BRHMALMT32Z  604E ONVOY, LLC - AL 476   2020-01-04   
256-371 6 Anniston AL BRHMALMT32Z  604E ONVOY, LLC - AL 476   2017-03-12   
256-371 7 Anniston AL BRHMALMT32Z  604E ONVOY, LLC - AL 476   2017-03-12   
256-371 8 Anniston AL BRHMALHRDS1  476H AIRUS, INC. - AL 476   2019-11-07   
256-371 9 Anniston AL BRHMALMT92Z  7475 POWERTEL BIRMINGHAM LICENSES, INC. 476      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.