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.

Belmont, MA

1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
617-209 A STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-209 0   7619 RCN TELECOM SERVICES, INC. - MA 128      
617-209 1 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-04-14   
617-209 2 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-03-25   
617-209 3 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-04   
617-209 4 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-01   
617-209 5 CHTWMABFDS2  966C DSCI, LLC 128   2005-04-10   
617-209 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2017-05-27   
617-209 7 BSTPMALLDS1  4536 XO MASSACHUSETTS, INC. 128   2006-11-10   
617-209 8 STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-209 9 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-08-13   
617-484 A BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-486 A BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-489 A BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-826 A BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC.-MA 128      
617-826 0 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-826 1 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-01   
617-826 2 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-826 3 BSTPMALLRMD  8345 GLOBAL CROSSING LOCAL SERVICES, INC.-MA 128      
617-826 4 FRMNMAWARMD  7421 AT&T LOCAL 128   2003-11-30   
617-826 5 BSTNMACODS7  4084 PAETEC COMMUNICATIONS, INC.- MA 128   2005-07-13   
617-826 6 CMBRMAORDS0  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2006-06-09   
617-826 7 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-826 8 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-03-25   
617-826 9 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
617-855 A BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-855 0 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-02-25   
617-855 1 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-02-25   
617-855 2 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-855 3 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-855 4 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-855 5 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-19   
617-855 6 BSTPMALLDS3  892D ONVOY, LLC - MA 128   2010-04-07   
617-855 7 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-10-21   
617-855 8 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-03-19   
617-855 9 BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-06-27   
617-883 A BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 0 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 1 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 2 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 3 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 4 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 5 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 6 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 7 SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2020-11-20   
617-883 8 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-883 9 BLMTMALEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-932 A CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-932 0 BSTPMALL7MD  966G LOCAL ACCESS LLC - MA 128   2016-07-01   
617-932 1   318J COMCAST IP PHONE LLC 128      

1 2 3 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.