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: 251 [Rate centres in NPA 251] [Dial plan for NPA 251]

NXX: 930

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-930 A Mobile AL MOBLALAZ03Z  156J RCLEC, INC. 480      
251-930 0 Mobile AL   516C AT&T CORP. 480   2016-07-14   
251-930 1 Mobile AL   773F MCC TELEPHONY OF THE SOUTH, LLC - AL 480   2016-10-16   
251-930 2 Mobile AL   5562 METROPCS, INC. 480   2017-01-06   
251-930 3 Mobile AL   5562 METROPCS, INC. 480   2016-12-28   
251-930 4 Mobile AL   604E ONVOY, LLC - AL 480   2016-07-08   
251-930 5 Mobile AL   8271 TELEPORT COMMUNICATIONS AMERICA, LLC - AL 480   2016-09-09   
251-930 6 Mobile AL   604E ONVOY, LLC - AL 480   2017-07-07   
251-930 7 Mobile AL   5562 METROPCS, INC. 480   2017-01-06   
251-930 8 Mobile AL   5562 METROPCS, INC. 480   2017-01-06   
251-930 9 Mobile AL   6916 ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 480   2017-01-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.