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: 205

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-205 A Hollister CA SLNSCA01X1Y  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 736      
831-205 0 Hollister CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-03-07   
831-205 1 Hollister CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-08-08   
831-205 2 Hollister CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2010-11-20   
831-205 3 Hollister CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2011-07-25   
831-205 4 Hollister CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2011-10-10   
831-205 5 Hollister CA SLNSCA01XQY  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 736   2011-03-18   
831-205 6 Hollister CA SLNSCA01X1Y  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 736   2009-12-15   
831-205 7 Hollister CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2012-04-19   
831-205 8 Hollister CA SLNSCA01XQX  5562 METROPCS, INC. 736   2013-04-22   
831-205 9 Hollister CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2012-12-21   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.