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: 645

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-645 A Ada OK OKCYOKCEX9Y  119F BANDWIDTH.COM CLEC, LLC - OK 536      
580-645 0 Ada OK   119F BANDWIDTH.COM CLEC, LLC - OK 536   2019-08-15   
580-645 1 Ada OK   624H ONVOY SPECTRUM, LLC 536   2021-12-06   
580-645 2 Ada OK   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2025-09-22   
580-645 3 Ada OK   409F ONVOY, LLC - OK 536   2021-03-04   
580-645 4 Ada OK   409F ONVOY, LLC - OK 536   2021-03-04   
580-645 5 Ada OK   624H ONVOY SPECTRUM, LLC 536   2021-02-24   
580-645 6 Ada OK   624H ONVOY SPECTRUM, LLC 536   2021-02-24   
580-645 7 Ada OK   624H ONVOY SPECTRUM, LLC 536   2021-05-23   
580-645 8 Ada OK   624H ONVOY SPECTRUM, LLC 536   2024-09-11   
580-645 9 Ada OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2021-03-27   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.