Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-277 A Redwood City CA SNFCCA21XCZ  6967 33 WIRELESS INC. 722      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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