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: 527

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-527 A Holliston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
774-527 0 Holliston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2022-01-28   
774-527 1 Holliston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-03-18   
774-527 2 Holliston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-03-18   
774-527 3 Holliston MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2024-04-10   
774-527 4 Holliston MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-06-04   
774-527 5 Holliston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-03   
774-527 7 Holliston MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128   2022-02-27   
774-527 8 Holliston MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2023-07-24   
774-527 9 Holliston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2023-01-23   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.