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: 541

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-541 A Lexington MA   829J PAETEC ITEL, LLC 128      
781-541 0 Lexington MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2002-12-09   
781-541 1 Lexington MA   829J PAETEC ITEL, LLC 128   2006-12-10   
781-541 2 Lexington MA   732H BARR TELL USA, INC. - MA 128   2016-01-01   
781-541 3 Lexington MA   829J PAETEC ITEL, LLC 128   2011-04-22   
781-541 4 Lexington MA   318J COMCAST IP PHONE, LLC 128   2014-11-20   
781-541 5 Lexington MA   829J PAETEC ITEL, LLC 128   2005-09-18   
781-541 6 Lexington MA   829J PAETEC ITEL, LLC 128      
781-541 7 Lexington MA   829J PAETEC ITEL, LLC 128      
781-541 8 Lexington MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
781-541 9 Lexington MA   145J TERRA NOVA TELECOM INC. 128   2025-11-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.