Get a .online for free when ordering a .com and .de
When you order a .com or .de domain you can bundle it with a free .online domain with the same name.
Just search for a .com, put it in your cart and then click "add .online domain for free" next to it.
A coupon is added to give you one year (or the first year if you order multiple years at once) of .online for free.
The domain will not renew automatically so there are no hidden costs for you.