Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Cyril, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-464 A CYRLOKXARP0  1984 OKLAHOMA COMMUNICATION SYSTEM, INC. 536      
580-464 0   1984 OKLAHOMA COMMUNICATION SYSTEM, INC. 536      
580-464 2   1984 OKLAHOMA COMMUNICATION SYSTEM, INC. 536      
580-464 3   1984 OKLAHOMA COMMUNICATION SYSTEM, INC. 536      
580-464 4   145J TERRA NOVA TELECOM INC. 536   2025-07-10   
580-464 6   409F ONVOY, LLC - OK 536   2023-11-13   
580-464 8   624H ONVOY SPECTRUM, LLC 536   2025-01-22   
580-957 A OKCYOKCEX6Z  258F WICHITA ONLINE, INC. - OK 536      

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

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