I'm sure admin@ai has a hell of a time getting his email address past naive form validation regexes.

Wow, that’s crazy. "ai" by itself is sort of the ultimate domain name.

I had to go to http://ai. in chrome (note the "." for the root is at the end), "ai." will autoexpand. Interesting.

It should, it is a valid domain name after all. something.ai is a subdomain of the .ai domain.

Interesting, this used to work for me but it seems now that Chrome has went out of its way to break it because it still works in Curl.

But wtf, Firefox redirects it to uniregistry.com :o