How can i find out what symbols does my data-provider have?

[ttodua]

let's say I have CQG (or whatever) credentials.
What symbols does that datafeed includes, can that be somewhere detected in NT, so i can see the list of the symbols , to which my account has an access?

[NinjaTrader_PatrickG]

It would be best to reach out to whoever you obtained the data subscription from to determine what real-time data you're enabled for. As an example, if you had a NinjaTrader Brokerage account, you would subscribe to certain data packages. You could obtain a list from your broker as to what you could view/trade.

From a platform perspective, NinjaTrader has hundreds of instruments to work 'out of the box' with many different data providers. There is no way to tell within the NinjaTrader platform what subscriptions you would have from your data provider.