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: 530 [Rate centres in NPA 530] [Dial plan for NPA 530]

NXX: 974

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-974 A Guinda CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2024-03-14   
530-974 0 Guinda CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726      
530-974 1 Guinda CA   649C ONVOY, LLC - CA 726      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.