Own modem and router

Hi, I would like to use my own modem and router for xfinity internet. I had xfinity previously in the past and used netgear c3700v2. Howver, I noticed that netgear c3700v2 is no longer on the compatability list for 200, 400, 800 mbps. Can i still use the netgear c3700v2 for xfinity internet?