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: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-857 A Allen OK ALLNOKMARS1  9533 SOUTHWESTERN BELL 536      
580-857 0 Allen OK   409F ONVOY, LLC - OK 536   2015-05-18   
580-857 1 Allen OK   9533 SOUTHWESTERN BELL 536      
580-857 2 Allen OK   9533 SOUTHWESTERN BELL 536      
580-857 3 Allen OK   624H ONVOY SPECTRUM, LLC 536   2021-11-21   
580-857 4 Allen OK   4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536   2005-10-23   
580-857 5 Allen OK   516C AT&T CORP. 536   2011-08-25   
580-857 6 Allen OK   624H ONVOY SPECTRUM, LLC 536   2021-11-21   
580-857 7 Allen OK   409F ONVOY, LLC - OK 536   2016-01-29   

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

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