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: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-312 A Hanover MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
781-312 0 Hanover MA   990E BANDWIDTH.COM CLEC, LLC - MA 128      
781-312 1 Hanover MA   829J PAETEC ITEL, LLC 128   2002-01-31   
781-312 2 Hanover MA   990E BANDWIDTH.COM CLEC, LLC - MA 128      
781-312 3 Hanover MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
781-312 4 Hanover MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
781-312 5 Hanover MA   5562 METROPCS, INC. 128   2017-12-05   
781-312 6 Hanover MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-01-06   
781-312 7 Hanover MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-04   
781-312 8 Hanover MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
781-312 9 Hanover MA   990E BANDWIDTH.COM CLEC, LLC - MA 128      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.