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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NPA: 918 [Rate centres in NPA 918] [Dial plan for NPA 918]

NXX: 890

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-890 A Drumright OK TULSOKTBXHY  409F ONVOY, LLC - OK 538      
918-890 0 Drumright OK   409F ONVOY, LLC - OK 538   2016-05-12   
918-890 1 Drumright OK   409F ONVOY, LLC - OK 538   2016-05-12   
918-890 2 Drumright OK   409F ONVOY, LLC - OK 538   2016-09-29   
918-890 3 Drumright OK   073H TELNYX LLC 538   2017-04-03   
918-890 4 Drumright OK   409F ONVOY, LLC - OK 538   2018-04-07   
918-890 5 Drumright OK   119F BANDWIDTH.COM CLEC, LLC - OK 538   2020-07-04   
918-890 6 Drumright OK   119F BANDWIDTH.COM CLEC, LLC - OK 538   2020-11-19   
918-890 7 Drumright OK   508J CENTURYLINK COMMUNICATIONS, LLC 538   2017-04-07   
918-890 8 Drumright OK   409F ONVOY, LLC - OK 538   2021-05-28   
918-890 9 Drumright OK   409F ONVOY, LLC - OK 538   2021-05-28   

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

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