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: 745

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-745 A Auburn: Main DA CA AUBNCA01DS0  9740 PACIFIC BELL 726      
530-745 0 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 1 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 2 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 3 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 4 Auburn: Main DA CA   516C AT&T CORP. 726   2006-07-07   
530-745 5 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 6 Auburn: Main DA CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 726   2007-03-02   
530-745 7 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 8 Auburn: Main DA CA   9740 PACIFIC BELL 726      
530-745 9 Auburn: Main DA CA   9740 PACIFIC BELL 726      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.