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.

Switch: CHYNOKXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-328 A Taloga OK 1988 DOBSON TEL. CO. 536      
580-488 A Leedey OK 1988 DOBSON TEL. CO. 536      
580-497 A Cheyenne OK 1988 DOBSON TEL. CO. 536      
580-526 A Erick OK 1988 DOBSON TEL. CO. 536      
580-534 A Sweetwater OK 1988 DOBSON TEL. CO. 536      
580-655 A Reydon OK 1988 DOBSON TEL. CO. 536      
580-926 A Camargo OK 1988 DOBSON TEL. CO. 536      
580-983 A Roger Mills OK 1988 DOBSON TEL. CO. 536      
580-995 A Vici OK 1988 DOBSON TEL. CO. 536      
806-565 A West Reydon TX 1988 DOBSON TEL. CO. 536      
806-754 A Sweetwater West TX 1988 DOBSON TEL. CO. 536      
806-988 A West Roger Mills TX 1988 DOBSON TEL. CO. 536      

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

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