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: 540

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-540 A Enid OK ENIDOKMARL1  9533 SOUTHWESTERN BELL 536      
580-540 0 Enid OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2014-03-20   
580-540 1 Enid OK ENIDOKMARL1  9533 SOUTHWESTERN BELL 536      
580-540 2 Enid OK OKCYOKCEXXY  516C AT&T CORP. 536   2011-02-05   
580-540 3 Enid OK OKCYOKMPDS0  7258 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 536   2007-08-01   
580-540 4 Enid OK   612K CSC VOICE, LLC 536   2007-01-10   
580-540 5 Enid OK OKCYOKSX4MD  5562 METROPCS, INC. 536   2016-05-15   
580-540 6 Enid OK   409F ONVOY, LLC - OK 536   2009-07-23   
580-540 7 Enid OK   409F ONVOY, LLC - OK 536   2009-07-23   
580-540 8 Enid OK   612K CSC VOICE, LLC 536   2009-01-08   
580-540 9 Enid OK   612K CSC VOICE, LLC 536   2012-04-06   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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