Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 351 [Rate centres in NPA 351] [Dial plan for NPA 351]

NXX: 241

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
351-241 A Hamilton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
351-241 2 Hamilton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-10-23   
351-241 9 Hamilton MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2025-06-13   

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

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