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: OKCYOKCEXWZ

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-662 5 Ringling OK 515J IP HORIZON LLC 536   2026-04-12   
580-666 4 Rocky OK 515J IP HORIZON LLC 536   2026-04-12   
580-685 2 Ardmore OK 515J IP HORIZON LLC 536   2026-04-04   
580-732 3 Alva OK 515J IP HORIZON LLC 536   2026-04-04   
580-757 0 Ryan OK 515J IP HORIZON LLC 536   2026-04-12   
580-758 6 Waukomis OK 515J IP HORIZON LLC 536   2026-04-12   
580-833 3 Blackwell OK 515J IP HORIZON LLC 536   2026-04-04   
580-857 8 Allen OK 515J IP HORIZON LLC 536   2026-04-04   
580-992 1 Newkirk OK 515J IP HORIZON LLC 536   2026-04-12   
580-998 0 Antlers OK 515J IP HORIZON LLC 536   2026-04-04   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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