Punycode
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Punycode 是一种将含有 Unicode 字符的[[idn|国际化域名]]转换为以 'xn--' 开头的 ASCII 兼容字符串的编码语法,使得只支持 ASCII 的[[dns|DNS]]能够处理非拉丁域名。
示例
The domain münchen.de (Munich with umlaut) is encoded as xn--mnchen-3ya.de in Punycode.