10.0.0.0.1 is a possible mispelling of 10.0.0.1 IP used by Xfinity Gateway and some other routers as a default IP address. 10.0.0.1 is an IP address from a private address space and could be used to address 16,777,216 IP addresses in a class A network. Since most of the home users don't need that many addresses in a private network, only IP addresses from 10.0.0.2 to 10.0.0.254 are used in this setting. Router uses 10.0.0.1 IP address to identify itself on a network and every device which needs to connect to the router will use 10.0.0.1 to find it.
10.0.0.1 IP address could be used by the following routers:
To access your router administrative UI go to your browser and type 10.0.0.1 into the address bar. Press Enter. If you don't see router login prompt then most probably your router is using another IP address to identify itself. Read our access default router page on how to find out a correct router IP.