Is it too soon to give out your digits?

So, I've been on Tinder recently, and something's been bugging me. Guys have been asking for my number before we've even had a proper convo in the app. I usually end up ghosting them because it feels way too soon to share my number. Like, shouldn't we chat a bit first to see if there's any chemistry? What do you guys think? Is this normal behavior, or am I just being too cautious? #DatingTips #OnlineDating