@TgScanRobot finds which telegram groups a person has joined! There are 600+ mil groups in TgScanRobot database.

TGBots – Airtrack Telegram Bots

Results are filtered by query = "airtrack"

airtrack_bot icon
@airtrack_bot AirTrack add to chat
Number of chats: 2
Get notified about the cheapest flights right on Telegram. 💸 Support us: http://bit.ly/2LXTAUk
airtrackbot icon
@airtrackbot fly add to chat
Number of chats: 0
Made in TgDev