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: 738

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-738 A Headrick OK HDRCOKMARL0  9533 SOUTHWESTERN BELL 536      
580-738 0 Headrick OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2016-02-19   
580-738 1 Headrick OK   9533 SOUTHWESTERN BELL 536      
580-738 2 Headrick OK   073H TELNYX LLC 536   2019-09-28   
580-738 3 Headrick OK   409F ONVOY, LLC - OK 536   2016-06-14   
580-738 4 Headrick OK   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2019-06-28   
580-738 5 Headrick OK   145J TERRA NOVA TELECOM INC. 536   2020-05-13   
580-738 6 Headrick OK   516C AT&T CORP. 536   2022-12-12   
580-738 7 Headrick OK   409F ONVOY, LLC - OK 536   2021-03-04   
580-738 8 Headrick OK   409F ONVOY, LLC - OK 536   2021-03-04   
580-738 9 Headrick OK   624H ONVOY SPECTRUM, LLC 536   2025-01-22   

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

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