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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-256 A Mustang OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-256 0 Mustang OK   318J COMCAST IP PHONE, LLC 536      
405-256 1 Mustang OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2015-10-17   
405-256 2 Mustang OK   119F BANDWIDTH.COM CLEC, LLC - OK 536   2011-04-02   
405-256 3 Mustang OK   119F BANDWIDTH.COM CLEC, LLC - OK 536   2012-08-18   
405-256 4 Mustang OK   119F BANDWIDTH.COM CLEC, LLC - OK 536   2014-06-13   
405-256 5 Mustang OK   318J COMCAST IP PHONE, LLC 536   2008-08-28   
405-256 6 Mustang OK   318J COMCAST IP PHONE, LLC 536   2006-04-03   
405-256 7 Mustang OK   516C AT&T CORP. 536   2007-02-15   
405-256 8 Mustang OK   119F BANDWIDTH.COM CLEC, LLC - OK 536   2015-05-29   
405-256 9 Mustang OK   073H TELNYX LLC 536   2017-06-19   

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

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