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: 703 [Rate centres in NPA 703] [Dial plan for NPA 703]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
703-439 A Herndon VA WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-439 0 Herndon VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2004-09-29   
703-439 1 Herndon VA MCLNVA23DS4  8825 LEVEL 3 COMMUNICATIONS, LLC - VA 236   2007-06-20   
703-439 2 Herndon VA WASJDCDCDS0  4005 GLOBAL CROSSING TELEMANAGEMENT, INC. - VA 236   2007-06-22   
703-439 3 Herndon VA WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-03-01   
703-439 4 Herndon VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2007-11-15   
703-439 5 Herndon VA WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-03-01   
703-439 6 Herndon VA WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-03-01   
703-439 7 Herndon VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2007-11-15   
703-439 8 Herndon VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2007-08-21   
703-439 9 Herndon VA WASKDCFNAMD  6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2007-08-21   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.