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.

Switch: MOBLAL35YMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
251-349 7 Mobile AL 478J NUSO, LLC 480   2024-10-18   
251-381 A Mobile AL 478J NUSO, LLC 480      
251-381 2 Mobile AL 478J NUSO, LLC 480   2022-02-04   
251-469 9 Mobile AL 478J NUSO, LLC 480   2024-11-05   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.