Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-757 A RYANOKMARS1  9533 SOUTHWESTERN BELL 536      
580-757 1   9533 SOUTHWESTERN BELL 536      
580-757 2   9533 SOUTHWESTERN BELL 536      
580-757 3   409F ONVOY, LLC - OK 536   2016-06-14   
580-757 4   624H ONVOY SPECTRUM, LLC 536   2025-01-22   
580-757 5   516C AT&T CORP. 536   2015-04-27   
580-757 6   409F ONVOY, LLC - OK 536   2021-03-04   
580-757 7   409F ONVOY, LLC - OK 536   2021-03-04   
580-757 8   073H TELNYX LLC 536   2019-09-28   
580-757 9   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2016-02-22   

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

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