Does Virgin mobile use sprint towers?

I am playing on switching from AT&T to Virgin mobile as I was reading on the Internet about it I came across an article that stated that Virginia mobile uses sprint towers. Is this true? Because when I went to the virgin mobile coverage map it showed there was no 4G where I live though my uncle has 4G on his iPhone and he is with AT&T.
Thanks Jason S.

Yes, boost mobile and virgin mobile use sprint towers