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.

Chilmark, MA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
508-645 A CHLMMASTRS1  9102 VERIZON NEW ENGLAND INC. 128      
508-645 0   892D ONVOY, LLC - MA 128   2016-04-04   
508-645 1   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-07-06   
508-645 2   9102 VERIZON NEW ENGLAND INC. 128      
508-645 3   9102 VERIZON NEW ENGLAND INC. 128      
508-645 4   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-07   
508-645 5   9102 VERIZON NEW ENGLAND INC. 128      
508-645 6   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-22   
508-645 7   9102 VERIZON NEW ENGLAND INC. 128      
508-645 8   892D ONVOY, LLC - MA 128   2016-04-04   
508-645 9   9102 VERIZON NEW ENGLAND INC. 128      
508-955 A BSTPMALLDS1  4536 XO MASSACHUSETTS, INC. 128   2006-05-28   
508-955 0   990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
508-955 1   4536 XO MASSACHUSETTS, INC. 128   2006-05-28   
508-955 2   4536 XO MASSACHUSETTS, INC. 128   2006-11-10   
508-955 3   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-24   
508-955 4   966G LOCAL ACCESS LLC - MA 128   2015-10-18   
508-955 5   892D ONVOY, LLC - MA 128   2010-04-07   
508-955 6   7575 CENTURYLINK COMMUNICATIONS LLC 128   2014-04-25   
508-955 7   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
508-955 8   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
508-955 9   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2006-10-30   
774-717 A   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
774-717 0   892D ONVOY, LLC - MA 128   2019-02-08   
774-717 1   892D ONVOY, LLC - MA 128   2019-02-08   
774-717 2   990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-06-13   
774-717 3   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2017-03-06   
774-717 4   990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-07-26   
774-717 8   073H TELNYX LLC 128   2019-09-27   

Last updated: Sun, 31 May 2020 11:59:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.