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: 874

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-874 A Kremlin OK KRMLOKMARL0  9533 SOUTHWESTERN BELL 536      
580-874 0 Kremlin OK   073H TELNYX LLC 536   2023-07-31   
580-874 1 Kremlin OK   9533 SOUTHWESTERN BELL 536      
580-874 2 Kremlin OK   9533 SOUTHWESTERN BELL 536      
580-874 3 Kremlin OK   409F ONVOY, LLC - OK 536   2018-05-03   
580-874 8 Kremlin OK   624H ONVOY SPECTRUM, LLC 536   2025-01-22   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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