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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Byars, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
405-267 A CLTNOK13DS0  3070 INVENTIVE TECHNOLOGY, LTD. - OK 536      
405-267 0   119F BANDWIDTH.COM CLEC, LLC - OK 536   2012-05-27   
405-267 1   119F BANDWIDTH.COM CLEC, LLC - OK 536   2014-07-13   
405-267 2   073H TELNYX LLC 536   2018-10-31   
405-267 3   119F BANDWIDTH.COM CLEC, LLC - OK 536   2015-08-27   
405-267 5   516C AT&T CORP. 536   2011-08-25   
405-267 8   3070 INVENTIVE TECHNOLOGY, LTD. - OK 536   2003-09-06   
405-267 9   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2015-04-03   
405-783 A BYRSOKMARS1  9533 SOUTHWESTERN BELL 536      
405-783 1   9533 SOUTHWESTERN BELL 536      
405-783 2   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2018-09-20   
405-783 4   9533 SOUTHWESTERN BELL 536      
405-783 5   409F ONVOY, LLC - OK 536   2016-04-14   
405-783 6   409F ONVOY, LLC - OK 536   2016-04-14   
405-783 7   409F ONVOY, LLC - OK 536   2016-06-29   
405-783 8   409F ONVOY, LLC - OK 536   2016-06-29   
405-783 9   145J TERRA NOVA TELECOM INC. 536   2020-05-14   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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