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: 283

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-283 A Piedmont OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-283 0 Piedmont OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536      
405-283 1 Piedmont OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2006-07-22   
405-283 2 Piedmont OK OKCYOKCEX9Y  119F BANDWIDTH.COM CLEC, LLC - OK 536   2010-11-20   
405-283 3 Piedmont OK OKCYOKCEX9Y  119F BANDWIDTH.COM CLEC, LLC - OK 536   2012-06-22   
405-283 4 Piedmont OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2004-04-11   
405-283 5 Piedmont OK   515J IP HORIZON LLC 536   2026-04-04   
405-283 6 Piedmont OK OKCYOKCEX9Y  119F BANDWIDTH.COM CLEC, LLC - OK 536   2008-12-01   
405-283 7 Piedmont OK   6529 T-MOBILE USA, INC. 536   2026-07-09   
405-283 8 Piedmont OK OKCYOKCEX9Y  119F BANDWIDTH.COM CLEC, LLC - OK 536   2010-03-05   
405-283 9 Piedmont OK OKCYOKCEXXZ  318J COMCAST IP PHONE, LLC 536   2013-12-13   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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