Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Colcord, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-312 A FTSMARSUXKX  624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-312 0   624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-312 1   624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-328 A FYVLARATRMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 526      
539-328 0   409F ONVOY, LLC - OK 526   2021-04-26   
539-328 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 526   2024-06-14   
539-328 2   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 526   2017-06-08   
539-328 3   409F ONVOY, LLC - OK 526   2018-11-05   
539-328 4   409F ONVOY, LLC - OK 526   2020-07-12   
539-328 5   409F ONVOY, LLC - OK 526   2020-07-12   
539-328 6   409F ONVOY, LLC - OK 526   2021-05-28   
539-328 7   409F ONVOY, LLC - OK 526   2020-12-25   
539-328 8   409F ONVOY, LLC - OK 526   2020-12-25   
539-328 9   073H TELNYX LLC 526   2022-08-13   
918-326 A CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 0   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 1   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 2   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 3   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 4   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 5   508J CENTURYLINK COMMUNICATIONS, LLC 526   2015-01-29   
918-326 6   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 7   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 8   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 9   1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      

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

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