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.

OCN: 390B DOBSON TECHNOLOGIES-TRANSPORT & TELECOM SOL - OK

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
405-242 A Britton OK OKCBOKYCDS1  536      
405-731 A Midwest City OK NWLLOKXADS1  536      
580-457 A Canute OK CHYNOKXADS1  536     2025-07-27 
580-500 A Clinton OK CHYNOKXADS1  536      
580-500 1 Clinton OK CHYNOKXADS1  536   2013-06-21   
918-974 A Poteau OK POTEOKXA5MD  538      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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