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: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-857 A Norman OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-857 0 Norman OK   409F ONVOY, LLC - OK 536   2017-12-08   
405-857 1 Norman OK   409F ONVOY, LLC - OK 536   2017-12-08   
405-857 2 Norman OK   318J COMCAST IP PHONE, LLC 536   2017-11-10   
405-857 3 Norman OK   409F ONVOY, LLC - OK 536   2018-04-15   
405-857 4 Norman OK   5562 METROPCS, INC. 536   2020-03-23   
405-857 5 Norman OK   5562 METROPCS, INC. 536   2018-06-23   
405-857 6 Norman OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2018-12-27   
405-857 7 Norman OK   318J COMCAST IP PHONE, LLC 536   2018-12-26   
405-857 8 Norman OK   318J COMCAST IP PHONE, LLC 536   2018-12-26   
405-857 9 Norman OK   318J COMCAST IP PHONE, LLC 536   2019-01-04   

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

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