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: 748

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-748 A Washington Zone 19 VA   829J PAETEC ITEL, LLC 236   2025-04-02   
571-748 0 Washington Zone 19 VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2025-10-20   
571-748 1 Washington Zone 19 VA   829J PAETEC ITEL, LLC 236      
571-748 2 Washington Zone 19 VA   829J PAETEC ITEL, LLC 236      
571-748 3 Washington Zone 19 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236   2005-04-29   
571-748 4 Washington Zone 19 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236   2005-04-29   
571-748 5 Washington Zone 19 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236   2006-03-30   
571-748 6 Washington Zone 19 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236   2006-06-25   
571-748 7 Washington Zone 19 VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236   2006-06-25   
571-748 8 Washington Zone 19 VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2007-09-02   
571-748 9 Washington Zone 19 VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2007-09-02   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.