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.

Holtville, CA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
760-756 7 SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2010-09-03   
760-756 8 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2010-05-17   
760-756 9 SNDGCA0264Z  145J TERRA NOVA TELECOM INC. 732   2024-02-12   

<< 1 2

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.