Undefined Character (U+11CF9)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𑳹` `𑳹`
UTF-8 Encoding:	`0xF0 0x91 0xB3 0xB9`
UTF-16 Encoding:	`0xD807 0xDCF9`
UTF-32 Encoding:	`0x00011CF9`

References