Generally, it is difficult to impossible to find out whom an address belongs to. However, there are some sites that try to figure out whom addresses belong to by clustering transaction activity of well-known entities in the space.
Bitcoin's Lightning Network, Simply Explained!
Since exchanges have a lot of transaction activity, it might actually be possible that your address turns up.
I can't vouch for accuracy or completeness of the data, but you might want to try to see whether the address is listed either on oxt.me or on walletexplorer.com to jog your memory.
H/T to user93863 who suggested walletexplorer.com first.
answered Apr 21 '19 at 2:25
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