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: 887

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-887 A Monterey CA MTRYCAPM5MD  145J TERRA NOVA TELECOM INC. 736      
831-887 0 Monterey CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-887 2 Monterey CA SLNSCA01XGX  9262 UTILITY TELECOM GROUP, LLC - CA 736      
831-887 4 Monterey CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2023-10-29   
831-887 6 Monterey CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2023-10-29   
831-887 7 Monterey CA   145J TERRA NOVA TELECOM INC. 736   2019-05-21   
831-887 8 Monterey CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736   2017-09-01   
831-887 9 Monterey CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2023-10-29   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.