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It is IDNA, the standard for encoding international unicode names into ascii dns. In this case the name is the encoding for ä1.com and that is what would show
by evgen 5y ago
It is IDNA, the standard for encoding international unicode names into ascii dns. In this case the name is the encoding for ä1.com and that is what would show up in browsers that convert punycode back to ascii in the url bar.