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: 568

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-568 A Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236      
571-568 0 Manassas VA BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-01-09   
571-568 1 Manassas VA BTVLMD12CM9  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-01-09   
571-568 2 Manassas VA ARTNVAARXFY  506J TWILIO INTERNATIONAL, INC. 236   2021-01-10   
571-568 3 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-22   
571-568 4 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-22   
571-568 5 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-08   
571-568 6 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-08   
571-568 7 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-08   
571-568 8 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-08   
571-568 9 Manassas VA VINNVACBDS0  138E ONVOY, LLC - VA 236   2021-01-22   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.