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: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-403 A Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 0 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 1 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 2 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 3 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 4 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 5 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 6 Anniston AL BRHMAL16X8X  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 476      
256-403 7 Anniston AL BRHMALMT41Z  072F BANDWIDTH.COM CLEC, LLC - AL 476      
256-403 8 Anniston AL BRHMALHRFMD  145J TERRA NOVA TELECOM INC. 476      
256-403 9 Anniston AL ANTNAL073MD  7475 POWERTEL BIRMINGHAM LICENSES, INC. 476      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.