Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   490J DISH WIRELESS, LLC 128   2025-07-03   
857-994 0 Newton MA   490J DISH WIRELESS, LLC 128   2025-07-03   
857-994 1 Newton MA   490J DISH WIRELESS, LLC 128   2025-10-23   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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