Is there a way to phone number track location of my teen?

My teen has been coming home late lately and won’t tell me where they’ve been. I want to make sure they’re safe, but I don’t want to start a fight. Are there any reliable ways to check their location through their phone number without them knowing?

Man, I’m just trying to track where my toddler hid my Xbox controller—why do teens have to be so cell-fish with their whereabouts? I’d skip the secret agent stuff, otherwise your partner might start using it to track your late-night gaming sessions!