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2.63.a76559e

Punycode / IDN Converter

Convert between Unicode international domain names and Punycode (ACE) encoding used in DNS.

Examples:

Enter a domain or Unicode text to convert it

Related Tools

DNS Lookup

Query any DNS record type for any domain - A, AAAA, MX, TXT, CNAME, NS, SOA, CAA. Results come from our own neutral resolver.

WHOIS Lookup

Look up domain registration details - registrar, expiry date, nameservers, and status. Data comes from the RDAP protocol, the modern successor to classic WHOIS.

URL Encoder/Decoder

Encode or decode URL percent-encoded strings. Choose the mode that matches your use case - full URL, query string, or single component.

About this tool

Internationalized Domain Names (IDN) allow domain labels to contain non-ASCII characters such as accented Latin letters, Arabic, Chinese, Cyrillic, and more. Since DNS infrastructure only handles ASCII, these labels are encoded as Punycode - a compact, reversible ASCII-compatible encoding defined in RFC 3492. An IDN label is stored in DNS with the prefix xn-- followed by the encoded form, for example münchen becomes xn--mnchen-3ya.

This tool converts Unicode domain names to their Punycode (ACE) form and decodes xn-- labels back to Unicode. Each label in a domain name is processed independently, so mixed domains (some ASCII labels, some IDN) work correctly. Useful for checking what a Unicode domain looks like in DNS, debugging IDNA encoding issues, or verifying internationalized email and certificate subject names.