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: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-855 A Carrier OK CRRROKMARL0  9533 SOUTHWESTERN BELL 536      
580-855 1 Carrier OK CRRROKMARL0  9533 SOUTHWESTERN BELL 536      
580-855 2 Carrier OK CRRROKMARL0  9533 SOUTHWESTERN BELL 536      
580-855 4 Carrier OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2018-04-30   
580-855 5 Carrier OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536   2016-06-14   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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