Give Google all your data. Well you have already given it because you used their services. So give it again and they will tell you when it shows up on 3rd party sites and you can request that info not show up in Google’s search results. Note that the info would still be on the 3rd party site.

I use first@firstlast.tld I bought my firstlast.tld several years ago. Figure it would look good. I then put a modified resume on my domain but when I started to think about being a security professional that didn’t seem like a good idea. I now have my domain bring up the IP, browser, and few other pieces of info and show it to whoever goes to the site. It is either that or blank page and I think the first is more fun.