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: 971

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-971 A Snyder OK SNYDOKXAPS0  1965 WINDSTREAM OKLAHOMA, INC. 536      
580-971 0 Snyder OK OKCYOKCEXJZ  624H ONVOY SPECTRUM, LLC 536   2025-01-22   
580-971 6 Snyder OK OKCYOKCEXOY  530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 536   2017-08-18   
580-971 9 Snyder OK SNYDOKXAPS0  1965 WINDSTREAM OKLAHOMA, INC. 536   2015-09-01   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.