Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 339 [Rate centres in NPA 339] [Dial plan for NPA 339]

NXX: 814

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
339-814 A Waltham MA NWTNMAWA01T  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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