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: FTGRFLMARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
904-251 A Jacksonville FL 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-251 0 Jacksonville FL 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-251 1 Jacksonville FL 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-251 2 Jacksonville FL 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      
904-251 3 Jacksonville FL 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 45204      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.