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: ATLNGATLXDX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
678-792 1 Cartersville GA 7421 AT&T - LOCAL 438   2002-11-09   
770-790 A Atlanta Northwest GA 7421 AT&T - LOCAL 438      
770-790 2 Atlanta Northwest GA 7421 AT&T - LOCAL 438      
770-790 9 Atlanta Northwest GA 7421 AT&T - LOCAL 438      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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