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: 881

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-881 A Monterey CA   252F WIDE VOICE, LLC - CA 736   2025-12-26   
831-881 1 Monterey CA   252F WIDE VOICE, LLC - CA 736   2025-12-26   
831-881 2 Monterey CA   252F WIDE VOICE, LLC - CA 736   2025-12-26   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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