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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 405 [Rate centres in NPA 405] [Dial plan for NPA 405]

NXX: 217

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-217 A Norman OK NRMNOKMADS0  9533 SOUTHWESTERN BELL 536      
405-217 0 Norman OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2008-01-28   
405-217 1 Norman OK NRMNOKMADS0  9533 SOUTHWESTERN BELL 536      
405-217 2 Norman OK OKCYOKCEXXY  516C AT&T CORP. 536      
405-217 3 Norman OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2005-10-23   
405-217 4 Norman OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2005-10-23   
405-217 5 Norman OK STWROK06DS0  4630 CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 536   2006-09-22   
405-217 6 Norman OK NRMNOKMADS0  9533 SOUTHWESTERN BELL 536      
405-217 7 Norman OK NRMNOKMADS0  9533 SOUTHWESTERN BELL 536      
405-217 8 Norman OK NRMNOKMADS0  9533 SOUTHWESTERN BELL 536      
405-217 9 Norman OK NRMNOKMADS0  9533 SOUTHWESTERN BELL 536      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.