What kind of domain name contains one or more emoji characters?

A domain name that contains one or more emoji characters is called an emoji domain. It is a type of internationalized domain name, because emoji are Unicode characters rather than ordinary ASCII letters and digits.

To work with the Domain Name System, an emoji domain is converted into a Punycode representation. That ASCII form begins with xn-- and can be stored and resolved by DNS infrastructure. A browser may display the friendly emoji version, the encoded version, or switch between them according to its security and rendering rules.

Emoji domains are not the same as vanity domains, parked domains, or mirror domains. A vanity domain is chosen for branding or personal identity; a parked domain is registered without an active site; and a mirror domain duplicates content at another address. Any of those could theoretically use emoji, but none describes the character format itself.

Support varies among registrars, browsers, email systems, and social platforms. Differences in emoji appearance across fonts and devices can also make these addresses harder to recognize or trust.