No domain ends with .sch
Domain name .cg means Congo (Republic of Congo)
Domain name
@=at
domainiens
Portugal
A website domain is traditionally known as the name or URL of a website
If a who-is query does not find a domain name, it means that the name is not being managed by that particular registrar.
Top-Level Domain Name
Invalid credentials means that one does not have the right to access something. You most likely do not have the correct user name and/or password.
Placing the Certified Domain seal on your Website and in your whois display certifies that you are the legal owner of your domain name.
Domain name lookup lets you see whether a particular website name (the domain) has already been bought by someone. If so, it shows you who is the registered owner of that particular website name (the domain), their address, and until when they own it.