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Dotless domains on gTLDs are prohibited. Technically can work (albeit with risks not easily solvable as explained in ICANN link) but is not allowed.

https://features.icann.org/dotless-domains




is http://bestbuy./ dotless?

I would think yes, despite the nomenclature, and that there is technically supposed to be a dot after the tdl.


You _can_ put a dot at the end, but it's not required https://news.ycombinator.com./

It's to clearly identify a domain as a FQDN and not as a subdomain of your search domain.


then how does http://ai/ exist?


That’s not a gTLD, it’s a ccTLD.

See https://news.ycombinator.com/item?id=24442033 for why it’s allowed on ccTLDs


That only works in Chrome for me so I assume it became sentient somewhere deep in the googleplex and is trying to escape.


Doesn't seem to work in Edge.


Works in Waterfox for me as well.


Clearly, it is succeeding.


I guess the problem with this is interoperability issues with LAN hostnames.


ccTLDs are so old that no actual rules were codified. As such they can do all sort of stuff. Like bare domain names for things like email.




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