Undefined Character (U+9FFFF)

Plane:unassigned, U+90000 - U+9FFFF[1]
HTML Entity:
  • 
  • 
UTF-8 Encoding:0xF2 0x9F 0xBF 0xBF
UTF-16 Encoding:0xDA3F 0xDFFF
UTF-32 Encoding:0x0009FFFF

References