Who is using Google Domain Apps?
This could be completely useless, or some interesting information. I guess it depends on you…
Google for inurl:googlehostedservice.html
This shows which domains are most likely using Google Domain Apps (or at least trying to). You could just check MX records too, but MX records aren’t indexed by Google now are they?
About the author
Brooks Garrett is a dedicated technologist who specializes in information security. Brooks has spent over 10 years implementing security programs for both the public and private sector including some of the biggest names in the Fortune 500. When he's not managing risk in the corporate environment you can find him at the local firestation where he is a volunteer firefighter.