Are you using cPanel (older servers) or LPCP (newer servers) as your control panel? "cPanel" is a brand name for a certain control panel, not a generic term. I think both control panels will show you the last login, but there may not be a full log of attempts. If you think someone is trying to hack into your account, open a support ticket to see if there's anything they can do to restrict origin IP addresses, etc. Also, consider changing your password, but only after you have swept your PC for spyware/viruses.