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: 831

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-831 A Portola CA CHICCA01XMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 724      
530-831 0 Portola CA CHICCA01SMD  981E BANDWIDTH.COM CLEC, LLC - CA 724      
530-831 1 Portola CA   145J TERRA NOVA TELECOM INC. 724      
530-831 2 Portola CA CHICCA01SMD  981E BANDWIDTH.COM CLEC, LLC - CA 724      
530-831 3 Portola CA CHICCA01XCX  649C ONVOY, LLC - CA 724      
530-831 4 Portola CA CHICCA01XFX  624H ONVOY SPECTRUM, LLC 724      
530-831 5 Portola CA   516C AT&T CORP. 724      
530-831 6 Portola CA CHICCA01XMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 724      
530-831 7 Portola CA CHICCACW7MD  145J TERRA NOVA TELECOM INC. 724      
530-831 8 Portola CA CHICCA01XCX  649C ONVOY, LLC - CA 724      
530-831 9 Portola CA CHICCACW2MD  939H COMMIO, LLC 724      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.