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: 945 [Rate centres in NPA 945] [Dial plan for NPA 945]

NXX: 394

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
945-394 A Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2025-09-29   
945-394 0 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 1 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 2 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 3 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 4 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 5 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 6 Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2025-09-29   
945-394 7 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 8 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   
945-394 9 Dallas TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2025-09-30   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.