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: 226

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
351-226 A Westford MA SOVLMAABJMD  598J FIVE9, INC. 128      
351-226 0 Westford MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2022-10-06   
351-226 1 Westford MA SOVLMAABJMD  598J FIVE9, INC. 128   2023-03-24   
351-226 2 Westford MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128   2022-04-01   
351-226 3 Westford MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-11-03   
351-226 4 Westford MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-07-03   
351-226 5 Westford MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-01-16   
351-226 6 Westford MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-01-16   
351-226 7 Westford MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-11-03   
351-226 8 Westford MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-11-03   
351-226 9 Westford MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2021-12-19   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.