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: 446

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-446 A Leighton AL LGTNALMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 477      
256-446 0 Leighton AL LGTNALMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 477      
256-446 1 Leighton AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2020-09-14   
256-446 2 Leighton AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2020-09-14   
256-446 3 Leighton AL HNVIALUNX6X  604E ONVOY, LLC - AL 477   2021-03-04   
256-446 4 Leighton AL   145J TERRA NOVA TELECOM INC. 477   2020-11-16   
256-446 5 Leighton AL LGTNALMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 477      
256-446 6 Leighton AL LGTNALMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 477      
256-446 8 Leighton AL LGTNALMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 477      
256-446 9 Leighton AL LGTNALMARS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 477      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.