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: 571 [Rate centres in NPA 571] [Dial plan for NPA 571]

NXX: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-406 A Triangle VA CHCHMDBEPS0  5832 CORETEL VIRGINIA, LLC - VA 236      
571-406 0 Triangle VA   5832 CORETEL VIRGINIA, LLC - VA 236      
571-406 1 Triangle VA ARTNVAARDS2  275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236      
571-406 2 Triangle VA WASHDCDP8MD  079F BANDWIDTH.COM CLEC, LLC - VA 236      
571-406 3 Triangle VA WASHDCDP8MD  079F BANDWIDTH.COM CLEC, LLC - VA 236      
571-406 4 Triangle VA WASHDCDP8MD  079F BANDWIDTH.COM CLEC, LLC - VA 236      
571-406 5 Triangle VA WASHDCDP8MD  079F BANDWIDTH.COM CLEC, LLC - VA 236      
571-406 6 Triangle VA ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
571-406 7 Triangle VA WASHDCDP8MD  079F BANDWIDTH.COM CLEC, LLC - VA 236      
571-406 8 Triangle VA BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
571-406 9 Triangle VA BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.