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: 861

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-861 A Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 0 Dauphin Island AL MOBLALAZ4MD  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 480   2014-05-13   
251-861 1 Dauphin Island AL MOBLALAZXUY  072F BANDWIDTH.COM CLEC, LLC - AL 480   2008-11-30   
251-861 2 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 3 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 4 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 5 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 6 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 7 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 8 Dauphin Island AL DPISALXARS1  9789 BRIGHTSPEED OF ALABAMA, LLC - NORTHERN 480      
251-861 9 Dauphin Island AL MOBLAL02CM2  6744 SOUTHERN COMMUNICATIONS SERVICES, INC. 480   2008-12-16   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.