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: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-390 A Southgate MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
774-390 0 Southgate MA SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2024-05-23   
774-390 1 Southgate MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2021-11-21   
774-390 2 Southgate MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-13   
774-390 3 Southgate MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-04   
774-390 4 Southgate MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2023-08-17   
774-390 5 Southgate MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-12   
774-390 6 Southgate MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-11-13   
774-390 7 Southgate MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-07-11   
774-390 8 Southgate MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-07-11   
774-390 9 Southgate MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-04   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.