Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 405 [Rate centres in NPA 405] [Dial plan for NPA 405]

NXX: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-299 A Calvin OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
405-299 0 Calvin OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2016-02-18   
405-299 1 Calvin OK   073H TELNYX LLC 536   2019-01-21   
405-299 2 Calvin OK   409F ONVOY, LLC - OK 536   2018-04-30   
405-299 3 Calvin OK   409F ONVOY, LLC - OK 536   2021-06-26   
405-299 4 Calvin OK   409F ONVOY, LLC - OK 536   2021-03-04   
405-299 5 Calvin OK   409F ONVOY, LLC - OK 536   2021-03-04   
405-299 6 Calvin OK   516C AT&T CORP. 536   2024-10-07   
405-299 7 Calvin OK   073H TELNYX LLC 536   2022-07-28   
405-299 8 Calvin OK   409F ONVOY, LLC - OK 536   2021-08-23   
405-299 9 Calvin OK   965H FRACTEL, LLC 536   2020-08-08   

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

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