Xfinity routers are double devices. You will also see (more than likely) at least one other node at the same strignth.
What X-Finity does is this. IF you are a customer you get a password. You can connect to ANY Xfinity router using your roaming password.. So you can use the Xfinity router nearest you.
OF course Xfinity does not have what I would call an honest reputation they ripped off a friend of mine.. I witnessed him call to cancel his service but they still billed him for an extra month.. Complete rip off. I would not contract with them.