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.

NPA: 580 [Rate centres in NPA 580] [Dial plan for NPA 580]

NXX: 992

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-992 A Newkirk OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
580-992 0 Newkirk OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2016-04-11   
580-992 1 Newkirk OK   515J IP HORIZON LLC 536   2026-04-12   
580-992 2 Newkirk OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2016-04-11   
580-992 6 Newkirk OK OKCYOKCEXBZ  073H TELNYX LLC 536   2018-10-31   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.