.in is quite popular in Germany. They consider that extension once .de, .com, .eu is taken. You can check it yourself here. Really lots of German sites with that extension. This trend is also visible in other EU countries but not as much as in Germany. I have registered a few top keywords in German and Polish languages just in case if that trend continues.I do not understand why .in is recognized as "international".
Knowing that I wouldn't say .in has definitely not an international potential although it has more common with the word internet rather than international.
I also often see Iranian and Indonesian sites with that extension. For some people .in looks better than their national .ir or .id. Don't remind any .in for Indiana or Indianapolis so that's perhaps less popular combo there.
Of course, that doesn't make it automatically a rebranded extension like .tv but it has some potential. If someone asked me, I would say that .in is "domain for India with added bonus". Currently I almost don't consider its possible international usage when researching .in potential.