no character

I ave played three years ago, logged in today and my 80lvl mage is gone, any way i could get him back by any chance?

1. On which realm?

2. Did you look for your character just on website or even in-game by logging with a client?
If no characters are showed on website -> it means they are flagged for a rename. So you need to log with client to set new names

3. Is your account premium?