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: TULSOKTBXGZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
539-296 5 Broken Arrow OK 321J HD CARRIER LLC 538   2026-04-09   
539-296 6 Broken Arrow OK 321J HD CARRIER LLC 538   2026-04-09   
539-325 8 Tulsa OK 321J HD CARRIER LLC 538   2026-04-13   
539-388 4 Bartlesville OK 321J HD CARRIER LLC 538   2026-04-09   
539-549 A Tulsa OK 321J HD CARRIER LLC 538      
539-549 9 Tulsa OK 321J HD CARRIER LLC 538   2020-04-03   
918-580 4 Bartlesville OK 321J HD CARRIER LLC 538   2026-04-09   
918-634 0 Tulsa OK 321J HD CARRIER LLC 538   2026-04-09   
918-796 4 Tulsa OK 321J HD CARRIER LLC 538   2025-12-01   
918-796 6 Tulsa OK 321J HD CARRIER LLC 538   2025-12-01   
918-796 7 Tulsa OK 321J HD CARRIER LLC 538   2025-12-01   
918-925 8 Tulsa OK 321J HD CARRIER LLC 538   2026-04-09   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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