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: 540 [Rate centres in NPA 540] [Dial plan for NPA 540]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
540-251 A Christiansburg VA RONKVALKXRX  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 244      
540-251 0 Christiansburg VA RONKVALKXJY  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 244   2010-04-02   
540-251 1 Christiansburg VA RONKVALKXYY  079F BANDWIDTH.COM CLEC, LLC - VA 244   2010-10-10   
540-251 2 Christiansburg VA RONKVALKXYY  079F BANDWIDTH.COM CLEC, LLC - VA 244   2010-02-28   
540-251 3 Christiansburg VA RONKVALK5MD  4979 SHENTEL COMMUNICATIONS, LLC. - VA 244   2010-11-20   
540-251 4 Christiansburg VA RONKVALKXYY  079F BANDWIDTH.COM CLEC, LLC - VA 244   2011-07-02   
540-251 5 Christiansburg VA RONKVALKX2Z  318J COMCAST IP PHONE, LLC 244   2012-09-11   
540-251 6 Christiansburg VA RONKVALKXYY  079F BANDWIDTH.COM CLEC, LLC - VA 244   2013-01-12   
540-251 7 Christiansburg VA RONKVALKXYY  079F BANDWIDTH.COM CLEC, LLC - VA 244   2014-03-27   
540-251 8 Christiansburg VA RONKVALKX3Z  4644 TELEPORT COMMUNICATIONS AMERICA, LLC - VA 244   2013-06-10   
540-251 9 Christiansburg VA RONKVALKXRX  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 244   2009-09-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.