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by jlick
1108 days ago
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xn-- is a prefix for Punycode IDNA (RFC3492) which allows for non-alphanumeric characters in domain names. This enables the DNS infrastructure to be able to continue to use traditional domain name character restrictions while allowing compliant applications to display and allow input of domain names in a variety Unicode supported characters which get translated internally to an encoded alphanumeric domain name. (It also sometimes allows one to use look-alike characters in phishing schemes.) |
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