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: 487

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-487 A Arcola VA WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
571-487 0 Arcola VA   197D VONAGE AMERICA LLC 236   2020-05-20   
571-487 1 Arcola VA   197D VONAGE AMERICA LLC 236   2020-05-20   
571-487 2 Arcola VA   138E ONVOY, LLC - VA 236   2020-03-30   
571-487 3 Arcola VA   138E ONVOY, LLC - VA 236   2020-03-30   
571-487 4 Arcola VA   138E ONVOY, LLC - VA 236   2020-11-09   
571-487 5 Arcola VA   138E ONVOY, LLC - VA 236   2020-11-09   
571-487 6 Arcola VA   624H ONVOY SPECTRUM, LLC 236   2021-05-21   
571-487 7 Arcola VA   138E ONVOY, LLC - VA 236   2020-08-17   
571-487 8 Arcola VA   138E ONVOY, LLC - VA 236   2020-08-17   
571-487 9 Arcola VA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2019-10-01   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.