whois article-city.com/website/www.pentaxuser.com/user/y3n-453859

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
article-city.com/website/www.pentaxuser.com/user/y3n-453859
checking....article-city.com/website/www.pentaxuser.com/user/y3n-453859
   $ whois article-city.com/website/www.pentaxuser.com/user/y3n-453859
No whois server is known for this kind of object.