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: 774 [Rate centres in NPA 774] [Dial plan for NPA 774]

NXX: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-475 A Marlboro MA SOVLMAAB3MD  197D VONAGE AMERICA LLC 128      
774-475 0 Marlboro MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-27   
774-475 1 Marlboro MA SOVLMAAB3MD  197D VONAGE AMERICA LLC 128   2021-06-27   
774-475 5 Marlboro MA SOVLMAAB3MD  197D VONAGE AMERICA LLC 128   2021-06-27   
774-475 7 Marlboro MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128   2022-03-03   
774-475 8 Marlboro MA   892D ONVOY, LLC - MA 128   2024-02-29   
774-475 9 Marlboro MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2024-04-01   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.