The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Bradley Wong:
Check the WHOIS information for any domain name.Works with the newest gTLDs such as .club, .ninja, and .domains.International Domain Names (IDNs) are also supported. Enter the domain in either the native language or punycode.Your lookups are saved locally to your device so you can re-check your past lookups.Lookups are performed directly from your device connecting to the TLD whois servers on port 43.