Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-272 A TULSOKTBXFY  119F BANDWIDTH.COM CLEC, LLC - OK 538      
539-272 0   119F BANDWIDTH.COM CLEC, LLC - OK 538   2022-03-05   
539-272 1   624H ONVOY SPECTRUM, LLC 538   2025-01-23   
539-866 A TULSOKTBXCZ  145J TERRA NOVA TELECOM INC. 538      
539-866 0   073H TELNYX LLC 538   2020-06-18   
539-866 1   409F ONVOY, LLC - OK 538   2021-04-26   
539-866 2   409F ONVOY, LLC - OK 538   2020-07-13   
539-866 3   409F ONVOY, LLC - OK 538   2020-07-13   
539-866 4   809H CROSS CABLE TELEVISION, LLC - OK 538   2021-12-31   
539-866 7   409F ONVOY, LLC - OK 538   2021-05-28   
539-866 9   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 538   2020-05-19   
918-862 A OLTNOKMARL1  9533 SOUTHWESTERN BELL 538      
918-862 0   119F BANDWIDTH.COM CLEC, LLC - OK 538   2008-12-01   
918-862 1   9533 SOUTHWESTERN BELL 538      
918-862 2   119F BANDWIDTH.COM CLEC, LLC - OK 538   2015-07-09   
918-862 3   9533 SOUTHWESTERN BELL 538      
918-862 4   508J CENTURYLINK COMMUNICATIONS, LLC 538   2017-04-08   
918-862 5   516C AT&T CORP. 538   2015-04-27   
918-862 6   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2015-12-31   
918-862 7   409F ONVOY, LLC - OK 538   2016-09-29   
918-862 8   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 538   2015-04-30   
918-862 9   9533 SOUTHWESTERN BELL 538      

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

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