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: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 319

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-319 A Watsonville CA SNJSCARMDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
831-319 0 Watsonville CA SNJSCARMDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
831-319 1 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2011-10-15   
831-319 2 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2012-07-25   
831-319 3 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2012-05-22   
831-319 4 Watsonville CA WTVLCADV0MD  776C CHARTER FIBERLINK CA-CCO, LLC - CA 722   2012-08-15   
831-319 5 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-06-13   
831-319 6 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2014-11-08   
831-319 7 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2013-12-16   
831-319 8 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2011-08-18   
831-319 9 Watsonville CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-09-16   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.