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.

Switch: SNDICAETAMD

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
858-997 6 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2008-07-11   
858-997 8 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2007-10-08   
858-997 9 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2007-11-06   
858-999 5 La Jolla CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2011-03-31   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.