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: 413

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-413 A Dulles VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-413 0 Dulles VA WASHDC127MD  073H TELNYX LLC 236      
571-413 1 Dulles VA BTVLMD127MD  5562 METROPCS, INC. 236      
571-413 2 Dulles VA WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
571-413 3 Dulles VA ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236      
571-413 4 Dulles VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-413 5 Dulles VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-413 6 Dulles VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-413 7 Dulles VA BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
571-413 8 Dulles VA WASHDC125MD  197D VONAGE AMERICA LLC 236      
571-413 9 Dulles VA WASHDC125MD  197D VONAGE AMERICA LLC 236      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.