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: 448

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-448 A Engleside VA WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-448 0 Engleside VA WASHDCDP8MD  079F BANDWIDTH.COM CLEC, LLC - VA 236   2017-06-04   
571-448 1 Engleside VA   515J IP HORIZON LLC 236   2013-07-11   
571-448 2 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 3 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 4 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 5 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 6 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 7 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 8 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   
571-448 9 Engleside VA WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2015-02-06   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.