While searching around for a solution to the Arris(modem) password of the day I found out that these routers where being crawled by most common search engines. I found this out by doing the following google query:
The in quote string comes from the default Arris Login page which looks something like this
From this page you can access the default Xfinity Login page by doing the following:
Click the BASIC tab Click the Xfinity tab //if present
Upon clicking the Xfinity tab you will be redirected to the network’s external IP with an open port 8080. Now that you are on this page it will ask you for the Username and Password.
All Xfinity routers come with the exact same login info.