10.0.0.1 is the default IP address to login admin panel of an Xfinity Comcast Router. People sometimes type it as 10.0.0.0.1, which returns with an invalid webpage or some error message. Xfinity Comcast belongs to the private class of the IP addresses, and we use it to access the Admin Panel of the Router. https://www.routerblogs.com/10-0-0-0-1