Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 432

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-432 A Boulder Creek CA SNJUCACL7MD  965H FRACTEL, LLC 722      
831-432 0 Boulder Creek CA   649C ONVOY, LLC - CA 722   2021-07-30   
831-432 1 Boulder Creek CA   649C ONVOY, LLC - CA 722   2021-07-30   
831-432 2 Boulder Creek CA   553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-16   
831-432 3 Boulder Creek CA   649C ONVOY, LLC - CA 722   2022-02-05   
831-432 4 Boulder Creek CA   624H ONVOY SPECTRUM, LLC 722   2021-07-23   
831-432 5 Boulder Creek CA   624H ONVOY SPECTRUM, LLC 722   2021-11-07   
831-432 6 Boulder Creek CA   624H ONVOY SPECTRUM, LLC 722   2021-11-07   
831-432 7 Boulder Creek CA   649C ONVOY, LLC - CA 722   2022-02-05   
831-432 8 Boulder Creek CA   965H FRACTEL, LLC 722   2021-02-20   
831-432 9 Boulder Creek CA   649C ONVOY, LLC - CA 722   2022-02-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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