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: TULSOKTBX8Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
539-207 A Chelsea OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
539-212 A Pawhuska OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
539-236 A Inola OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
918-200 A Tulsa OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
918-281 A Tulsa OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
918-709 A Muskogee OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
918-886 A Bartlesville OK 530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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