Knowing the login in Telegram, can I find out the phone number?

Question

Messengers

Knowing the login in Telegram, can I find out the phone number?

Answer 1

No.
https://telegram.org/faq#q-if-someone-finds-me-by-...

Answer 2

Can

Answer 3

There is an option. When importing numbers into contacts, the user's nickname is displayed, that is, if you import a huge number of numbers through the API, then with a high probability the number will be determined. The only question is the power.
I found a video on YouTube where the bot determines the number of a real person, it doesn’t look like a divorce https://www.youtube.com/watch?v=FNAmFj6uEcg