I wanted to put one on my own site
...Why?
Who do you use for hosting?
HostNine.
Are there any other scripts that would accomplish this without the "outgoing connections"?
No, that's physically impossible. Unless you had a 1.5 TB database on your server that you would manually update every second...
It has to use the outgoing connections so it can ask the DNS whether the site was available.
Outgoing connections are just sending/receiving data to/from other sites.
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