Step one, find your public IP, I like ipinfo.io but there are many other services that will show it. Then pop it into a tool like the one that's hosting TFA[1]

1: https://layer3intel.com/context

There is also iphub.info and iphunter.info.

In my experience, out of the two, iphunter.info has the more comprehensive database, I think the owner/operator frequents HN.