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: 341

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-341 A Washington Zone 17 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-341 0 Washington Zone 17 VA BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236      
571-341 1 Washington Zone 17 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-341 2 Washington Zone 17 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-341 3 Washington Zone 17 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-341 4 Washington Zone 17 VA LARLMDCC5MD  7769 LEVEL 3 TELECOM OF VIRGINIA, LLC - VA 236      
571-341 5 Washington Zone 17 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-341 6 Washington Zone 17 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236      
571-341 7 Washington Zone 17 VA VINNVACBDS0  138E ONVOY, LLC - VA 236      
571-341 8 Washington Zone 17 VA WASHDC12DS6  275G PEERLESS NETWORK OF VIRGINIA, LLC - VA 236      
571-341 9 Washington Zone 17 VA VINNVACBDS0  138E ONVOY, LLC - VA 236      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.