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.
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Roosevelt, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-639 A RSVTOKXARS1  1965 WINDSTREAM OKLAHOMA, INC. 536      
580-717 A LWTNOKTBZMD  258F WICHITA ONLINE, INC. - OK 536      
580-828 A   624H ONVOY SPECTRUM, LLC 536   2025-03-06   
580-828 0   624H ONVOY SPECTRUM, LLC 536   2025-03-06   
580-828 8   145J TERRA NOVA TELECOM INC. 536   2025-07-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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