whois tumblr.com/gettoknowyourstyle

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

tumblr.com/gettoknowyourstyle

checking....tumblr.com/gettoknowyourstyle
$ whois tumblr.com/gettoknowyourstyle
No whois server is known for this kind of object.