Tool to see where domains are hosted?
 

We have so many, after moving a few times we no longer know what is hosted where exactly. When we log into an old host, we see names there still on the server that we run elsewhere.

Is there a tool that shows a list of given names and their current dns location?

That'd be great.

whois.sc/domain.com

Firefox has an app for that

What is that called? we use FF