What character(s) does a bitstring is encoded in each character set?

Bitstring:
Binary  Hexadecimal 
EncodingBitstringCharacter(s)
ISO-8859-13ff9f9?ùù
SJIS-WIN3ff9f9?
EUC-JP3ff9f9??
UTF-83ff9f9???
UHC3ff9f9?桁