whois www.youtube.com/channel/UCDv6oxr0eRM_qWNjNVOOgTA

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
www.youtube.com/channel/UCDv6oxr0eRM_qWNjNVOOgTA
checking....www.youtube.com/channel/UCDv6oxr0eRM_qWNjNVOOgTA
   $ whois www.youtube.com/channel/UCDv6oxr0eRM_qWNjNVOOgTA
No whois server is known for this kind of object.