Perhaps this is relevant, and was released just this week by ICANN: https://www.icann.org/en/system/files/files/sac-095-en.pdf https://www.icann.org/en/system/f

Perhaps this is relevant, and was released just this week by ICANN: https://www.icann.org/en/system/files/files/sac-095-en.pdf https://www.icann.org/en/system/files/files/sac-095-en.pdf "Finding 1: Emoji are disallowed by the IDNA standard; domain names with emoji will not be accepted or processed consistently by applications. Finding 2: Emoji are not required by design, standard, or convention to be visually uniform (one code point displayed the same way in all circumstances) or visually distinguishable (different code points displayed in ways that permit them to be disambiguated regardless of context). As a result, a user will be exposed to problems of confusability and accessibility. Different code points that are rendered the same or one code point that renders differently to different users will lead to inconsistent results depending on the display or rendering technology used. Finding 3: Emoji modifiers and “glue” arrangements allow for a potentially much larger set of composed multi-codepoint symbols with even greater rendering variation and potential for ambiguous interpretation. Finding 4: A fundamental property of the DNS is that it is an exact-match lookup service. For a given query, either there is a single name that matches or there is no match. When two domain names are identical in appearance except for ordinary typographic style variations (which, at present, have no equivalent for emoji), but have different underlying code points, they identify two different DNS domains. Finding 5: It is unrealistic to expect that just because a code point is included in Unicode, it should be used as part of a domain name."