I feel like in theory google should be returning this site, instead of the ad-filled sites when one searches "my ip address." But it always seems like Google heavily over-values the domain name and search term matches.
The "first result" in a Google query for "my ip" and other combinations is a box with your public IP. There's no reason to click in any of the ad-filled sites anymore.
This had been true for me for several years, but recently, I have found that Google no longer provides that info box and it's necessary to click into one of the search results. (I am using Firefox, but I am logged into a Google account of it makes any difference.)
Yes that's true, but besides the point. My point is that obviously relevant (to a human) results like icanhazip don't show up anywhere just because the domain name is... creative. This happens to more verticals than this one, where the top results happen to be websites with some SEO tricks like having a domain name that matches the search term.