WASHINGTON, Dec. 28 /PRNewswire-FirstCall/ -- Cogent Communications Group, Inc. (Nasdaq: CCOI), one of the largest Internet service providers in the world, today announced that Dave Schaeffer, Cogent's chief executive officer, will present at the following conferences:
Source : http://www.prnewswire.com/news-releases/cogent-com...
Source : http://www.prnewswire.com/news-releases/cogent-com...