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: 448

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-448 A Francisco AL HNLDTNMADS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      
256-448 0 Francisco AL NSVLTNMTY9Z  624H ONVOY SPECTRUM, LLC 470   2023-06-11   
256-448 1 Francisco AL NSVLTNMT83Z  604E ONVOY, LLC - AL 470   2023-07-21   
256-448 2 Francisco AL NSVLTNMT83Z  604E ONVOY, LLC - AL 470   2017-05-11   
256-448 3 Francisco AL NSVLTNMT83Z  604E ONVOY, LLC - AL 470   2016-12-18   
256-448 4 Francisco AL NSVLTNMT83Z  604E ONVOY, LLC - AL 470   2016-12-18   
256-448 5 Francisco AL NSVLTNMTYVY  516C AT&T CORP. 470   2011-06-01   
256-448 6 Francisco AL NSVNTNGN6MD  516J TON80 COMMUNICATIONS, LLC 470   2022-03-22   
256-448 7 Francisco AL HNLDTNMADS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 470      
256-448 8 Francisco AL NSVLTNMT83Z  604E ONVOY, LLC - AL 470   2017-05-11   
256-448 9 Francisco AL NSVLTNMTYOZ  478J NUSO, LLC 470   2020-09-28   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.