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: TULSOKOWRSC

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
918-272 A Owasso OK 9533 SOUTHWESTERN BELL 538      
918-274 A Owasso OK 9533 SOUTHWESTERN BELL 538      
918-376 A Owasso OK 9533 SOUTHWESTERN BELL 538      
918-376 1 Owasso OK 9533 SOUTHWESTERN BELL 538      
918-376 2 Owasso OK 9533 SOUTHWESTERN BELL 538      
918-376 8 Owasso OK 9533 SOUTHWESTERN BELL 538   2006-04-20   
918-376 9 Owasso OK 9533 SOUTHWESTERN BELL 538      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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