Local Calling Guide

Area code/prefix search

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NPA: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-231 A Greenfield (Monterey) CA SLNSCA01XCY  624H ONVOY SPECTRUM, LLC 736      
831-231 0 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2019-07-05   
831-231 1 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2021-03-05   
831-231 2 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2019-09-13   
831-231 3 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2019-09-13   
831-231 4 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2020-03-02   
831-231 5 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2020-03-02   
831-231 6 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2021-03-05   
831-231 7 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2020-06-08   
831-231 8 Greenfield (Monterey) CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2020-06-08   
831-231 9 Greenfield (Monterey) CA SLNSCA01XCY  624H ONVOY SPECTRUM, LLC 736   2021-06-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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