Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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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 FTSMARSUXKX  624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-312 1 FTSMARSUXKX  624H ONVOY SPECTRUM, LLC 526   2025-01-10   
539-328 A FYVLARATRMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 526      
539-328 0 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2021-04-26   
539-328 1 FTSMARHUGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 526   2024-06-14   
539-328 2 FYVLARATRMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 526   2017-06-08   
539-328 3 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2018-11-05   
539-328 4 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2020-07-12   
539-328 5 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2020-07-12   
539-328 6 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2021-05-28   
539-328 7 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2020-12-25   
539-328 8 FTSMARSUX0X  409F ONVOY, LLC - OK 526   2020-12-25   
539-328 9 FYVLARATPMD  073H TELNYX LLC 526   2022-08-13   
918-326 A CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 0 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 1 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 2 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 3 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 4 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 5 FTSMARSUXYX  508J CENTURYLINK COMMUNICATIONS, LLC 526   2015-01-29   
918-326 6 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 7 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 8 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      
918-326 9 CLCROKXARS0  1142 BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 526      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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