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: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-521 A Grand Bay AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-521 0 Grand Bay AL MOBLALMTX9X  939H COMMIO, LLC 480      
251-521 1 Grand Bay AL MOBLALAZXUY  072F BANDWIDTH.COM CLEC, LLC - AL 480      
251-521 2 Grand Bay AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-521 3 Grand Bay AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-521 4 Grand Bay AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-521 5 Grand Bay AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-521 6 Grand Bay AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-521 7 Grand Bay AL MOBLALAZ4MD  5255 LEVEL 3 COMMUNICATIONS, LLC - AL 480      
251-521 8 Grand Bay AL MOBLALAZXUY  072F BANDWIDTH.COM CLEC, LLC - AL 480      
251-521 9 Grand Bay AL MOBLALAZXUY  072F BANDWIDTH.COM CLEC, LLC - AL 480      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.