Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

NXX: 314

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-314 A San Rafael CA MLPTCAVPAMD  0051 SHELCOMM 722   2024-11-03   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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