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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Chelsea, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-207 A TULSOKTBX8Y  530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538      
539-207 0   409F ONVOY, LLC - OK 538   2021-09-11   
539-207 1   409F ONVOY, LLC - OK 538   2021-09-11   
539-207 2   409F ONVOY, LLC - OK 538   2020-07-13   
539-207 3   409F ONVOY, LLC - OK 538   2020-07-13   
539-207 4   409F ONVOY, LLC - OK 538   2021-03-04   
539-207 5   409F ONVOY, LLC - OK 538   2021-03-04   
539-207 6   530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538   2017-01-09   
539-207 7   508J CENTURYLINK COMMUNICATIONS LLC 538   2017-02-16   
539-207 8   506J TWILIO INTERNATIONAL INC 538   2021-08-07   
539-207 9   073H TELNYX LLC 538   2019-01-21   
539-267 A TULSOKTBXHY  409F ONVOY, LLC - OK 538   2022-01-17   
539-267 0   073H TELNYX LLC 538   2022-01-18   
539-267 3   409F ONVOY, LLC - OK 538   2022-01-17   
539-267 4   409F ONVOY, LLC - OK 538   2022-01-17   
539-267 7   516J TON80 COMMUNICATIONS LLC 538   2022-02-03   
918-789 A CHLSOKMARS1  9533 SOUTHWESTERN BELL 538      
918-789 0   119F BANDWIDTH.COM CLEC, LLC - OK 538   2008-12-01   
918-789 1   9533 SOUTHWESTERN BELL 538      
918-789 2   9533 SOUTHWESTERN BELL 538      
918-789 3   9533 SOUTHWESTERN BELL 538      
918-789 4   409F ONVOY, LLC - OK 538   2016-09-29   
918-789 5   145J TERRA NOVA TELECOM INC. 538   2020-12-15   
918-789 6   516C AT&T CORP. 538   2010-11-28   
918-789 7   945H NORTHEAST RURAL SERVICES, INC. - OK 538   2009-10-26   
918-789 8   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2014-06-01   
918-789 9   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 538   2016-03-05   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.