[metadat]

I was mistaken.

Thanks for the -30 downvotes HN.

[selcuka]

It is interesting because http://.ai works (it says remove www, not the dot).

Edit: The HN generated link does not work because it appends a trailing slash to the end.

[andai]

Works without the dot for me. (Not the https variant though.)

[selcuka]

Yes, it worked for me too (Firefox). Interestingly http://ai goes to http://www.ai.com while http://ai/ works. ¯\_(ツ)_/¯