Local Calling Guide

Area code/prefix search

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NPA: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 344

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-344 A Sturbridge MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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