Possibly you arrived here without knowing why. Two i18n experiments use redirections to this Google site. One experiment is
xn--xyzzy.dyndns.org inspired by the i18n Fun blog entry. I'm far from sure that
xn--xyzzy is a valid IDNA A-label, but the Unicode decoder apparently accepts it.
The other experiment was inspired by Martin Dürst's IRI test suite. IRIs are a superset of the URIs allowing percent-encoded UTF-8 characters within IRIs, and punycoded IDNA domain names in the
host part of URIs. The URIs and URLs as of today are specified in RFC 3986 (STD 66), the IRIs are specified in RFC 3987, UTF-8 is specified in RFC 3629 (STD 63), and IDNA is specified in two sets of RFCs known as IDNA 2003 and IDNA 2008 (IDNAbis).
- SYSTEM "http://purl.net/xyzzy/-xhtml1-i18n.dtd" permits IRIs in links
- IDN IRI test using homebrewn xhtml1-i18n DTD
- IDN IRI test using KOI8-R
- IDN URI system identifier test (should pass)
- IDN IRI system identifier test (should fail)
- encoded system identifier test (unclear)