Undefined Character (U+1FFFB)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`🿻` `🿻`
UTF-8 Encoding:	`0xF0 0x9F 0xBF 0xBB`
UTF-16 Encoding:	`0xD83F 0xDFFB`
UTF-32 Encoding:	`0x0001FFFB`

References