Local Calling Guide

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NPA: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 392

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-392 A Westford MA WSFRMADERP0  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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