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.

May, ID

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
208-876 A CHLSIDXCDS0  2218 CUSTER TEL. COOP., INC. 652      
986-334 A BOISIDPZ0MD  516J TON80 COMMUNICATIONS, LLC 652      
986-334 2 BOISIDPZ0MD  516J TON80 COMMUNICATIONS, LLC 652   2022-04-03   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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