whois www.xing.com/profile/Cumali_Hazir

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

www.xing.com/profile/Cumali_Hazir
checking....www.xing.com/profile/Cumali_Hazir
   $ whois www.xing.com/profile/Cumali_Hazir
No whois server is known for this kind of object.