Why do you think it's specifically because you're from India? How do you know that message isn't also displayed to other new accounts that try to submit the same link?
Have you believed something random you read on the internet?
I can certainly believe that there are sites, submissions to which are only accepted from a user with an established account. That would account for the observation you quote. I can also believe that some of those sites might be in India, but I suspect they are not only in India, and that being in India is not the problem.
I find it very hard to believe that the site discriminates on the basis of the user's originating country of connection - can you provide evidence that it really is the user's country that's the cause?
one of the reason is I see accounts 20 minutes old and they get to post immediately and I don't. Maybe I am speculating but we can never know until someone official from YC clarifies this.
There are sites that are banned - submissions to them are dead on arrival. Most sites are not banned - submissions to them are fine.
I have no trouble believing that there are sites that are in a gray area, and submissions to them are only accepted from users with established accounts.
Why are you leaping to the conclusion that it must be because you are from India? That's what I don't understand. Try creating a new account and submitting a link to a well-known, well-received, high-quality site. Submit a Wikipedia link to something interesting, see if that works.
Have you actually done any experiments? Are you simply assuming it's because you're from India?
I tried searching it on google, look like country specific banning
https://www.quora.com/Hacker-News/What-should-I-do-when-I-ge...