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: 781 [Rate centres in NPA 781] [Dial plan for NPA 781]

NXX: 923

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-923 A Cohasset MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
781-923 0 Cohasset MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
781-923 1 Cohasset MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
781-923 2 Cohasset MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-24   
781-923 3 Cohasset MA   145J TERRA NOVA TELECOM INC. 128   2024-02-08   
781-923 4 Cohasset MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-24   
781-923 5 Cohasset MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-04-25   
781-923 6 Cohasset MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2013-04-24   
781-923 7 Cohasset MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
781-923 8 Cohasset MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
781-923 9 Cohasset MA   515J IP HORIZON LLC 128   2016-07-01   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.