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: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-628 A Dale City VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-01-29   
571-628 0 Dale City VA   138E ONVOY, LLC - VA 236      
571-628 1 Dale City VA   138E ONVOY, LLC - VA 236      
571-628 2 Dale City VA   138E ONVOY, LLC - VA 236      
571-628 3 Dale City VA   138E ONVOY, LLC - VA 236      
571-628 4 Dale City VA   515J IP HORIZON LLC 236      
571-628 5 Dale City VA   515J IP HORIZON LLC 236      
571-628 6 Dale City VA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-628 7 Dale City VA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-628 8 Dale City VA   138E ONVOY, LLC - VA 236      
571-628 9 Dale City VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.