Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 580 [Rate centres in NPA 580] [Dial plan for NPA 580]

NXX: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-633 A Eldorado OK ELDROKMARS1  9533 SOUTHWESTERN BELL 536      
580-633 0 Eldorado OK   409F ONVOY, LLC - OK 536   2021-04-26   
580-633 1 Eldorado OK   9533 SOUTHWESTERN BELL 536      
580-633 2 Eldorado OK   9533 SOUTHWESTERN BELL 536      
580-633 3 Eldorado OK   409F ONVOY, LLC - OK 536   2016-06-26   
580-633 4 Eldorado OK   409F ONVOY, LLC - OK 536   2021-05-28   
580-633 5 Eldorado OK   516C AT&T CORP. 536   2011-08-25   
580-633 6 Eldorado OK   409F ONVOY, LLC - OK 536   2020-07-11   
580-633 7 Eldorado OK   409F ONVOY, LLC - OK 536   2020-07-11   
580-633 8 Eldorado OK   073H TELNYX LLC 536   2019-09-28   
580-633 9 Eldorado OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2016-02-19   

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

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