Boxed letter Z regional indicator; combined in pairs to make country flag emoji such as South Africa or New Zealand.
U+1F1FEREGIONAL INDICATOR SYMBOL LETTER YU+1F1FDREGIONAL INDICATOR SYMBOL LETTER XU+1F1FCREGIONAL INDICATOR SYMBOL LETTER WU+1F1FBREGIONAL INDICATOR SYMBOL LETTER VU+1F1FAREGIONAL INDICATOR SYMBOL LETTER UU+1F1F9REGIONAL INDICATOR SYMBOL LETTER TU+1F1F8REGIONAL INDICATOR SYMBOL LETTER SU+1F1F7REGIONAL INDICATOR SYMBOL LETTER RU+1F1F6REGIONAL INDICATOR SYMBOL LETTER QU+1F1F5REGIONAL INDICATOR SYMBOL LETTER PU+1F1F4REGIONAL INDICATOR SYMBOL LETTER OU+1F1F3REGIONAL INDICATOR SYMBOL LETTER N201 characters in the Enclosed Alphanumeric Supplement Unicode block, from number 201.