Domain Name Validity

Last Updated: May 27, 2016

  • Domain names are case-insensitive and do not distinguish between simplified and traditional Chinese characters;
  • A valid domain name must contain 1-63 characters (excluding the suffix).
  • Suffixes not supported by DNS API include: sh, tel, and some country domain names.
  • A valid English domain name may include a-z, 0-9, and "-" (not at the beginning or end and not in both the third and fourth places).
  • In addition to valid English characters, a Chinese domain name must contain at least one Chinese character (simplified or traditional). The length of a Chinese domain name is measured in punycode after conversion.
  • Request parameters starting with "xn—" (punycode) are not supported. Please use a Chinese domain name as the request parameter.
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