Once you're registered at merong account na dito sa forum, there's no way para malaman yan. But there's a possible way for that lalo na if gusto mo pa lang mag register
or mag register ulit ng new account.
I know lots of users here know the so-called evil points, in which nag kakaroon ng evil points if yung gamit mong IP pag register is nagamit na ng ibang existing users especially sa mga banned accounts or those blacklisted IPs dito sa forum, so you need to pay to remove those.

Sa case mo, there's no need to worry, just be careful na lang since public wifi is not safe to use.