Knoxville Tickets / KnoxvilleTickets.com (the "Site", and formerly known as Tickets Unlimited) is an online service operated by Thompson/Boling Arena, University of Tennessee, with an operating address of 1600 Phillip Fulmer Way, Suite 202, Knoxville, TN 37996; Telephone center (865) 656-4444 (local) or (877) 995-9961 (toll-free).  Beginning Monday, April 6, 2020, telephone hours are Monday, Wednesday and Friday 10:00 am - 2:00pm Eastern Time (telephone hours subject to change without notice).