Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 341 [Rate centres in NPA 341] [Dial plan for NPA 341]

NXX: 341

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
341-341 A Fremont-Newark: Oliver DA CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2024-11-24   
341-341 3 Fremont-Newark: Oliver DA CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2024-11-24   
341-341 4 Fremont-Newark: Oliver DA CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2024-11-24   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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