Undefined Character (U+10FFFF)

Block:	Supplementary Private Use Area-B, U+100000 - U+10FFFF^[1]
Plane:	Supplementary Private Use Area planes, U+100000 - U+10FFFF^[1]
HTML Entity:	`􏿿` `􏿿`
UTF-8 Encoding:	`0xF4 0x8F 0xBF 0xBF`
UTF-16 Encoding:	`0xDBFF 0xDFFF`
UTF-32 Encoding:	`0x0010FFFF`

References