Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 351 [Rate centres in NPA 351] [Dial plan for NPA 351]

NXX: 217

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
351-217 A Gloucester MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
351-217 0 Gloucester MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2023-01-06   
351-217 1 Gloucester MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2021-09-11   
351-217 2 Gloucester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-25   
351-217 3 Gloucester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-25   
351-217 4 Gloucester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-04-25   
351-217 5 Gloucester MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-31   
351-217 6 Gloucester MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-01-06   
351-217 7 Gloucester MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-25   
351-217 8 Gloucester MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2021-09-11   
351-217 9 Gloucester MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-04-24   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.