whois groups.google.com/g/seo-expert01/c/_zF0MlLnYWs

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
groups.google.com/g/seo-expert01/c/_zF0MlLnYWs
checking....groups.google.com/g/seo-expert01/c/_zF0MlLnYWs
   $ whois groups.google.com/g/seo-expert01/c/_zF0MlLnYWs
No whois server is known for this kind of object.