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: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-638 A Bromide OK BRMDOKXARP0  2010 MID-AMERICA TEL., INC. 536      
580-638 0 Bromide OK BRMDOKXARP0  2010 MID-AMERICA TEL., INC. 536      
580-638 1 Bromide OK OKCYOKCEXJZ  624H ONVOY SPECTRUM, LLC 536   2025-01-22   
580-638 2 Bromide OK BRMDOKXARP0  2010 MID-AMERICA TEL., INC. 536      
580-638 4 Bromide OK BRMDOKXARP0  2010 MID-AMERICA TEL., INC. 536      
580-638 8 Bromide OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2023-11-25   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.