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: CLTNOKMADS2

Remotes:

Switch Switch name Switch type
BESSOKMARS1  BESSIE  RLC 
CRDLOKMARS1  CORDELL  RSC 
EKCYOKMARS1  ELK CITY  RSC 
HBRTOKMARS1  HOBART  RSC 
LNWFOKMARS1  LONE WOLF  RLC 
RCKYOKMARS1  ROCKY  RLC 
SAYROKMARS1  SAYRE  RSC 
WTFROKMARS1  WEATHERFORD  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-323 A Clinton OK 9533 SOUTHWESTERN BELL 536      
580-331 A Clinton OK 9533 SOUTHWESTERN BELL 536      
580-331 1 Clinton OK 9533 SOUTHWESTERN BELL 536      
580-331 2 Clinton OK 9533 SOUTHWESTERN BELL 536      
580-331 3 Clinton OK 9533 SOUTHWESTERN BELL 536      
580-547 A Clinton OK 9533 SOUTHWESTERN BELL 536      
580-547 0 Clinton OK 9533 SOUTHWESTERN BELL 536      

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

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