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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-421 A Rockland MA BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC. - MA 128      
781-421 0 Rockland MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
781-421 1 Rockland MA   515J IP HORIZON LLC 128   2015-03-26   
781-421 2 Rockland MA BRTNMACR0MD  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2004-10-31   
781-421 3 Rockland MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2010-03-19   
781-421 4 Rockland MA BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC. - MA 128   2010-01-09   
781-421 5 Rockland MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2009-04-08   
781-421 6 Rockland MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2012-11-10   
781-421 7 Rockland MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-09-25   
781-421 8 Rockland MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2022-09-02   
781-421 9 Rockland MA   515J IP HORIZON LLC 128   2016-07-01   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.