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: 940 [Rate centres in NPA 940] [Dial plan for NPA 940]

NXX: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-347 A Seymour TX WCFLTXRK0MD  6271 UNITED STATES CELLULAR - TX 548      
940-347 0 Seymour TX   6271 UNITED STATES CELLULAR - TX 548      
940-347 1 Seymour TX   6271 UNITED STATES CELLULAR - TX 548      
940-347 2 Seymour TX   6271 UNITED STATES CELLULAR - TX 548   2025-02-28   
940-347 3 Seymour TX   6271 UNITED STATES CELLULAR - TX 548   2025-02-28   
940-347 4 Seymour TX   6271 UNITED STATES CELLULAR - TX 548   2025-02-28   
940-347 5 Seymour TX   6271 UNITED STATES CELLULAR - TX 548   2025-02-28   
940-347 6 Seymour TX   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 548   2023-01-17   
940-347 7 Seymour TX   6529 T-MOBILE USA, INC. 548   2025-02-13   
940-347 8 Seymour TX   6529 T-MOBILE USA, INC. 548   2025-02-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.