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: 518

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
540-518 A Dublin VA RONKVALKXJY  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 244      
540-518 0 Dublin VA   138E ONVOY, LLC - VA 244   2018-03-10   
540-518 1 Dublin VA   073H TELNYX LLC 244   2021-05-31   
540-518 2 Dublin VA   079F BANDWIDTH.COM CLEC, LLC - VA 244   2019-05-25   
540-518 3 Dublin VA   624H ONVOY SPECTRUM, LLC 244   2021-05-27   
540-518 4 Dublin VA   079F BANDWIDTH.COM CLEC, LLC - VA 244   2018-05-31   
540-518 5 Dublin VA   138E ONVOY, LLC - VA 244   2020-11-09   
540-518 6 Dublin VA   4644 TELEPORT COMMUNICATIONS AMERICA, LLC - VA 244   2016-05-06   
540-518 7 Dublin VA   318J COMCAST IP PHONE, LLC 244   2019-03-29   
540-518 8 Dublin VA   138E ONVOY, LLC - VA 244   2020-11-09   
540-518 9 Dublin VA   8825 LEVEL 3 COMMUNICATIONS, LLC - VA 244   2003-03-31   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.