Curious Name Resolved!

[James Scott Hunter]

A friend asked an unusual question today about some spam he received this
weekend.  I won't include the full URL of the spam, just the interesting part -
as I would want to inadvertantly help these people out.

The URL he received started with:

http://3345775946/

He asked me how an URL like this would work,  and demonstrated it for me.  
Checking it out with nslookup it resolves to user.exit.de.

What magic is at work here??

Thx


-- 
Scott Hunter