To check the DA (Domain Authority) history of your website on Moz, you will need to create an account on Moz and add your website to your account. Here are the steps to follow:

Go to Moz.com and create an account. You can create a free account or sign up for a paid account to access more features.

Once you have created your account, go to your Moz dashboard and click on "Add Listing" under the "Manage Listings" tab.

Enter the URL of your website and click on "Check My Listing."

Moz will analyze your website and provide you with a DA score. You can also view your website's historical DA scores by clicking on the "Link Explorer" tab and selecting "Inbound Links" from the dropdown menu.

In the Inbound Links report, you will see a graph that shows your website's DA over time. You can adjust the date range to see how your DA has changed over different periods of time.

I hope this helps! Let me know if you have any further questions.