That's a great site - it lists every antenna and tower that is out there. However, on 'unregistered' towers (less than 200 feet) it doesn't always list the people that lease space on the tower.
If you have a certain location you are interested in, post the nearest cross streets, city and zip and I'll look up the Sprint towers. It may take a day or two to get back to you...
Check out a fun infographic that teaches you how to increase storage, enhance security, improve battery life and clean your device.