 WASHINGTON , Jan. 4, 2023 PRNewswire -- Cogent Communications Holdings, Inc. Cogent NASDAQ: CCOI, one of the largest Internet service providers in the world, today announced a time change for Dave Schaeffers, Cogents Chief Executive Officer, presentation at the following conference: The Citi 2023 Communications, Media Entertainment Conference is being held at the Four Seasons Scottsdale at Troon North in Scottsdale, AZ. Dave Schaeffer will now be presenting on Wednesday, January 4th at 1:00 p.m. 