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: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-237 A Harwich MA BRTNMACR0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
774-237 0 Harwich MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2005-05-06   
774-237 1 Harwich MA BRTNMACR0MD  3370 CTC COMMUNICATIONS CORP. - MA 128   2002-05-17   
774-237 2 Harwich MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-07-08   
774-237 3 Harwich MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2012-03-16   
774-237 4 Harwich MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2002-06-18   
774-237 6 Harwich MA BSTPMALLOMD  073H TELNYX LLC 128   2017-05-09   
774-237 7 Harwich MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-07   
774-237 8 Harwich MA CMBRMAMQDS3  316E YMAX COMMUNICATIONS CORP. - MA 128   2008-03-08   
774-237 9 Harwich MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2012-07-20   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.