whois yerliakor.com/user/dryvase4/

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

yerliakor.com/user/dryvase4/

checking....yerliakor.com/user/dryvase4/
$ whois yerliakor.com/user/dryvase4/
No whois server is known for this kind of object.