whois www.mandolinman.it/guestbook/

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)

www.mandolinman.it/guestbook/

checking....www.mandolinman.it/guestbook/
$ whois www.mandolinman.it/guestbook/
No whois server is known for this kind of object.