Complete with the security of '96:
http://www.dolekemp96.org/divider.gi
[Intentionally broken link]
Safesecureweb.com. Heh.
Although other than knowing it's running IIS (which is in the Server header of the responses anyway), it's not particularly useful. Unlike modern web apps, it's not displaying a stack trace or debug information that contains db connection strings and the like.
Also, this is fixed by changing one line in web.config AFAIK (it's been a good five years since I worked with IIS in any capacity)