I found this in a forum. Try it and see what happens:
“I just discovered this today and I want to know if its just for me:”
“Type a random internet address then add .ro.ro at the end”
“Example: http://random-site.ro.ro”
“How can it happen for every single address??”
“And always in your language/proxies language?”
“LOL”
B2B-TechCopy Technology Marketing Blog 
Here’s what a friend shared with me:
Hi, Randy…
Looks like some smart Romanian kids bought the domain ro.ro
As such, all the other web addresses attaching .ro.ro at the end will become sub-domains of the main domain ro.ro, hence being redirected to the same page…
I tried to do this with Google too.
If you add .ro.ro to the end of Google.com you’ll find a funny looking page.
Have fun!
Here’s what I added:
Are you really sure what your computer son works on, with his computer projects? LOL.
But you are right. If you click in http://ro.ro, it brings up a Romanian site.
Randy
Someone on Twitter found an exception, which is http://ro.ro.ro