I believe you are looking for the Volatility DAX.
The symbol VXY.X, which is free delayed data with the IQ Core Services. This is carried on the Eurex Index Exchange. If you do not already carry this exchange it is $6.50 per month for Non-Professional accounts.
You can add an Exchange to your IQ Account by logging in at the following link.https://my.telventdtn.com/storefront/login
Once you are logged in, look for a link on the page that is labeled "Add additional exchanges, news, add-ons"
Please let us know if there is anything else we can assist you with.
Stephen Shockey | Telvent DTN LLC | Trading Markets | United States |Customer Service Technical Support