This is just a simple little ruby app I wrote to output the users IP in the JSON tree format. Simply deploy this app and go to /json and you should be able to see your IP. == NOTES == Some systems like Heroku don't handle requests properly when they are running through their cloud. As a result you wil see the servers ip when you go to /json == HOSTED == I modified the script a bit so that it can run on google appengine... You can use it here http://hdsjsonip.appspot.com/