whois gsalesstaging.wpengine.com/author/lucilechoml/

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