Local Calling Guide

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

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-799 A Cambridge MA   321J HD CARRIER LLC 128   2018-12-29   
857-799 9 Cambridge MA   321J HD CARRIER LLC 128   2018-12-29   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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