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: DLLSGAES44A

Remotes:

Switch Switch name Switch type
RCKMGAESRS1  ROCKMART  EXM 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
678-363 A Atlanta Northwest GA 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 438      
770-443 A Atlanta Northwest GA 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 438      
770-445 A Atlanta Northwest GA 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 438      
770-505 A Atlanta Northwest GA 9417 BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 438      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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