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: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-444 A Washington Zone 8 VA VINNVACBDS0  138E ONVOY, LLC - VA 236      
571-444 0 Washington Zone 8 VA VINNVACB1MD  514G ATLANTECH ONLINE OF VIRGINIA, L.L.C. 236      
571-444 1 Washington Zone 8 VA STNGVA08DS0  4534 PAETEC COMMUNICATIONS OF VIRGINIA, LLC - VA 236      
571-444 2 Washington Zone 8 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-444 3 Washington Zone 8 VA BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
571-444 4 Washington Zone 8 VA VINNVACBDS0  138E ONVOY, LLC - VA 236      
571-444 5 Washington Zone 8 VA VINNVACBDS0  138E ONVOY, LLC - VA 236      
571-444 6 Washington Zone 8 VA VINNVACBDS0  138E ONVOY, LLC - VA 236      
571-444 7 Washington Zone 8 VA ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
571-444 8 Washington Zone 8 VA ARTNVAARX8X  551G NUSO, LLC 236      
571-444 9 Washington Zone 8 VA BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.