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: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX: 932

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-932 A Belmont MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-932 0 Belmont MA BSTPMALL7MD  966G LOCAL ACCESS LLC - MA 128   2016-07-01   
617-932 1 Belmont MA   318J COMCAST IP PHONE LLC 128      
617-932 2 Belmont MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128   2002-10-13   
617-932 3 Belmont MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128   2007-02-18   
617-932 4 Belmont MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2004-03-21   
617-932 5 Belmont MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-09-01   
617-932 6 Belmont MA BSTPMALLDS1  4536 XO MASSACHUSETTS, INC. 128   2011-03-02   
617-932 7 Belmont MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2012-10-06   
617-932 8 Belmont MA   318J COMCAST IP PHONE LLC 128   2013-05-30   
617-932 9 Belmont MA WOBNMACGCMD  6664 SPRINT SPECTRUM L.P. 128   2007-01-03   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.