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: BOISIDMAYMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
208-577 A Boise ID 7421 AT&T - LOCAL 652      
208-577 9 Boise ID 7421 AT&T - LOCAL 652      
208-779 A Caldwell ID 7421 AT&T - LOCAL 652      
208-779 9 Caldwell ID 7421 AT&T - LOCAL 652   2003-07-31   
208-915 A Pocatello ID 7421 AT&T - LOCAL 652      
208-915 3 Pocatello ID 7421 AT&T - LOCAL 652      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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