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   
831-881 6 Monterey CA   321J HD CARRIER LLC 736   2026-06-19   
831-881 7 Monterey CA   321J HD CARRIER LLC 736   2026-06-19   
831-881 8 Monterey CA   321J HD CARRIER LLC 736   2026-06-19   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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