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: 585

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-585 A Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736      
831-585 0 Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736   2006-05-31   
831-585 1 Salinas CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2005-04-11   
831-585 2 Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736   2006-10-08   
831-585 3 Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736   2006-10-08   
831-585 4 Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736   2007-08-05   
831-585 5 Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736   2008-05-23   
831-585 6 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2007-04-05   
831-585 7 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2006-11-17   
831-585 8 Salinas CA SLNSCA01XQX  5562 METROPCS, INC. 736   2006-08-27   
831-585 9 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2006-06-15   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.