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: ATLNGABU20Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
404-704 A Atlanta GA 7421 AT&T - LOCAL 438      
404-704 1 Atlanta GA 7421 AT&T - LOCAL 438      
770-523 A Buchanan GA 7421 AT&T - LOCAL 438      
770-523 9 Buchanan GA 7421 AT&T - LOCAL 438   2022-10-27   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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