Yes, easiest way is to type the full ens name into the search on opensea. Then look at the NFT. See what address it was minted to. If you are having trouble, just post the ens name here.
My domain was expired.
Solved! Found the address what I used to buy it.
This helped me: https://reclaim.ens.domains/ - access it in incognito if is not working because of MetaMask.