Is PrivacyProtect.org [who are masking the "Australian" company website] a legitimate website?
Some quick Googling brings up a few folk complaining that domain name squatters/resellers have used the PrivacyProtect service to mask their details, and that PrivacyProtect are apparently rather less than helpful when it comes to enquiries about it. That does seem to be their stock in trade though, so I guess it's to be expected. I also notice that when you type 'privacyprotect' into Google, the second autocomplete suggestion (after 'privacy protect') is 'privacyprotect.org scam'.
None of that is proof they're not legit, of course, but I can't help but wonder why a reputable company would be using such a service in the first place. Particularly one in the web sector; if they wanted to hide details from a WHOIS I'm sure they could've done so without using a third-party service.