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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
351-231 A Gloucester MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
351-231 0 Gloucester MA   892D ONVOY, LLC - MA 128   2023-11-03   
351-231 1 Gloucester MA   892D ONVOY, LLC - MA 128   2023-11-03   
351-231 2 Gloucester MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-08-29   
351-231 3 Gloucester MA   490J DISH WIRELESS, LLC 128   2023-06-08   
351-231 4 Gloucester MA   892D ONVOY, LLC - MA 128   2023-07-03   
351-231 5 Gloucester MA   892D ONVOY, LLC - MA 128   2023-11-03   
351-231 6 Gloucester MA   892D ONVOY, LLC - MA 128   2023-11-03   
351-231 7 Gloucester MA   892D ONVOY, LLC - MA 128   2023-11-03   
351-231 8 Gloucester MA   892D ONVOY, LLC - MA 128   2023-11-03   
351-231 9 Gloucester MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-05-22   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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