I actually went and looked at the code off of the site. From a very quick look-through¹, it does not appear that it does anything malicious (like sending /etc/passwd back to the author). The only use of Socket that I saw was for doing the dns lookup, as someone mentioned.

However, the original question is vague enough to warrant a different interpretation. Perhaps instead of "send information on our server elsewhere?" the querent meant to ask "Will this information be accessible to people on the outside of our server?" If that is the real question, my best guess at the answer is "yes, just like any other web page on the server." Of course, it'd be hard to get to without knowing the exact URL, but that's just security through obscurity. Use of .htaccess (which the perl script won't interfere with) may be called for here.

¹ Total Disclaimer: I only skimmed the script, and take no responsibilty if you use it and I missed something and it blows up your program, CPU, house, or fingers.