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: 538

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
781-538 A Lexington MA BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC.-MA 128      
781-538 0 Lexington MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
781-538 2 Lexington MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2013-09-10   
781-538 4 Lexington MA   318J COMCAST IP PHONE LLC 128   2009-08-23   
781-538 5 Lexington MA   318J COMCAST IP PHONE LLC 128   2005-01-20   
781-538 6 Lexington MA   318J COMCAST IP PHONE LLC 128   2006-11-02   
781-538 7 Lexington MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2013-09-10   
781-538 8 Lexington MA BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC.-MA 128      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.