How to find a nickname in telegram and other social networks by phone number?

Question

Social media

Somehow, about 4 months ago, I came across a site, it had such a yellow background, you enter a number and it showed accounts in social networks to this number, including giving out nicknames in telegrams on some phones.
ps. And it's not a numberphone

Answer 1

There is such a yellow service beholder.pro
Only recently it showed social media. networks and names by phone number, incl. telegram, and now blurry pictures, names under asterisks, only the beginning of the full name is visible. It is written that "Sorry, the search for social networks is temporarily not working :(". For how long, it is not known.
I did not find analogues.

Answer 2

On Facebook, all you need to do is enter a phone number into a search.
In VK parsers - for example Target Hunter.
In TG, add a contact by phone number, it will show the nickname.

Answer 3

Without merged bases - in any way. There is a small base number / user for telegram, obtained by brute force, but such a trick can not be repeated as far as I know. Nicknames in tg are changed by the user, so this information is not very useful.

Answer 4

In telegrams, you can determine the nickname by phone number through their API. To do this, you need to send a contact to any chat and receive a response from the server. The answer will be a nickname and chat_id.