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: 429

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-429 A Bowie TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 548   2025-11-17   
940-429 0 Bowie TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548   2026-01-03   
940-429 6 Bowie TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 548   2025-11-17   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.