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: 741

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-741 A Medford OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-741 0 Medford OK   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-741 1 Medford OK   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-741 2 Medford OK   409F ONVOY, LLC - OK 536   2016-06-15   
580-741 3 Medford OK   409F ONVOY, LLC - OK 536   2016-06-15   
580-741 4 Medford OK   7258 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 536   2017-09-15   
580-741 6 Medford OK   530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 536   2020-03-23   
580-741 7 Medford OK   409F ONVOY, LLC - OK 536   2021-06-26   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.