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: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-321 A Winchendon MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
978-321 0 Winchendon MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-11-24   
978-321 1 Winchendon MA SOVLMAAB2MD  966G LOCAL ACCESS LLC - MA 128   2015-10-30   
978-321 2 Winchendon MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-03-28   
978-321 3 Winchendon MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-03-28   
978-321 4 Winchendon MA CMBRMAORDS0  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2020-03-04   
978-321 5 Winchendon MA WSBOMAGO0MD  4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-06-16   
978-321 6 Winchendon MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-11   
978-321 7 Winchendon MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS LLC 128   2014-04-25   
978-321 8 Winchendon MA BSTPMALL7MD  966G LOCAL ACCESS LLC - MA 128   2016-07-01   
978-321 9 Winchendon MA BSTPMALLOMD  073H TELNYX LLC 128   2017-05-09   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.