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Comment on DNS tools for developers

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I'm interested in more details about how the "Iran Firewall Test" works. It shows my site as blocked, while I can confirm it elsewhere, it would be nice to know how this determined that.

I suspect it's getting hammered at the moment -- the Iran check returned an error for me, and the Google page rank check for "google.com" or "yahoo.com" still reports "Sorry, we couldn't seem to find that domain in Google's cache."

To the developer: this is a great time to refine the error handling (plus scaling, of course). :)

E.g., make sure when the requests fail (for whatever reason) that it can report this back to the user clearly.

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