Also for the benefit of everyone reading this I found a website called crt.sh that lets you search for any issued certificate with just its domain name, SHA256 or SHA1 fingerprint. For example for the Wikipedia cert above, I would type the SHA256 fingerprint in the screenshot above. The colons are not necessary and the website will figure out the way you typed the hash.
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Also for the benefit of everyone reading this I found a website called crt.sh that lets you search for any issued certificate with just its domain name, SHA256 or SHA1 fingerprint. For example for the Wikipedia cert above, I would type the SHA256 fingerprint in the screenshot above. The colons are not necessary and the website will figure out the way you typed the hash.