Local Calling Guide

Area code/prefix search

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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 994

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-994 A Newton MA SOVLMAABDMD  490J BOOST SUBSCRIBERCO L.L.C. 128     2026-07-31 

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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