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

Bitstring:
Binary  Hexadecimal 
EncodingBitstringCharacter(s)
ISO-8859-13f818f3f3f3f3f3f3f3f3f5f3f3f3f3f?????????_????
SJIS-WIN3f818f3f3f3f3f3f3f3f3f5f3f3f3f3f?¥????????_????
EUC-JP3f818f3f3f3f3f3f3f3f3f5f3f3f3f3f?????????_????
UTF-83f818f3f3f3f3f3f3f3f3f5f3f3f3f3f???????????_????
UHC3f818f3f3f3f3f3f3f3f3f5f3f3f3f3f?걦????????_????