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: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-312 A Monterey CA   388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 736   2024-05-26   
831-312 0 Monterey CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-312 1 Monterey CA   649C ONVOY, LLC - CA 736      
831-312 2 Monterey CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-312 3 Monterey CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-312 4 Monterey CA   649C ONVOY, LLC - CA 736      
831-312 5 Monterey CA   388E CEBRIDGE TELECOM CA, LLC DBA SUDDENLINK COMMS - CA 736      
831-312 6 Monterey CA   6529 T-MOBILE USA, INC. 736      
831-312 7 Monterey CA   6529 T-MOBILE USA, INC. 736      
831-312 8 Monterey CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-312 9 Monterey CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.