URL Status Code Checker
Are you sure this 301 redirection is still up ?
of your URL response status code
You know how some URL should behave and which status code they should have.
Your homepage should be a successful 200, your not found page a 404, that redirection you just setup a 301...
But will you notice if any of this change behind your back ?
SEOwl will notify you when something is not as expected so that you can make sure everything is right.