The flag for Brunei Darussalam, which may show as the letters BN on some platforms.
The Flag: Brunei emoji is a flag sequence combining ? Regional Indicator Symbol Letter B and ? Regional Indicator Symbol Letter N. These display as a single emoji on supported platforms.
Flag: Brunei was added to Emoji 1.0 in 2015.
U+1F1E7
U+1F1F3
?? Regional indicator symbol letter b
?? Regional indicator symbol letter n