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: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
351-400 A Essex MA SOVLMAABAMD  965H FRACTEL, LLC 128      
351-400 0 Essex MA SOVLMAABAMD  965H FRACTEL, LLC 128   2020-07-06   
351-400 2 Essex MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-06   
351-400 3 Essex MA BSTPMALLZMD  506J TWILIO INTERNATIONAL, INC. 128   2020-12-19   
351-400 4 Essex MA SOVLMAABAMD  965H FRACTEL, LLC 128   2020-07-06   
351-400 5 Essex MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-08   
351-400 6 Essex MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
351-400 7 Essex MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
351-400 9 Essex MA   145J TERRA NOVA TELECOM INC. 128   2024-02-14   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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