whois docs.google.com/spreadsheets/d/18yp7qppUkWdPi2VVrHp3174AevcJNO7B/edit

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
docs.google.com/spreadsheets/d/18yp7qppUkWdPi2VVrHp3174AevcJNO7B/edit
checking....docs.google.com/spreadsheets/d/18yp7qppUkWdPi2VVrHp3174AevcJNO7B/edit
   $ whois docs.google.com/spreadsheets/d/18yp7qppUkWdPi2VVrHp3174AevcJNO7B/edit
No whois server is known for this kind of object.