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: 738 [Rate centres in NPA 738] [Dial plan for NPA 738]

<< 1 2

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
738-999 5 Los Angeles: DA 04 CA   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 6 Los Angeles: DA 04 CA   6529 T-MOBILE USA, INC. 730   2025-12-22   
738-999 7 Los Angeles: DA 04 CA   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 8 Los Angeles: DA 04 CA   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 9 Los Angeles: DA 04 CA   252F WIDE VOICE, LLC - CA 730   2025-11-21   

<< 1 2

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.