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: 674

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-674 A Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 0 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 1 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 2 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 3 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 4 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2017-04-27   
831-674 5 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 6 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 7 Greenfield (Monterey) CA SLNSCA01XOX  776C CHARTER FIBERLINK CA-CCO, LLC - CA 736   2017-11-04   
831-674 8 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      
831-674 9 Greenfield (Monterey) CA GNFDCA11RS0  9740 PACIFIC BELL 736      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.