As character names:

U+FA05 CJK COMPATIBILITY IDEOGRAPH-FA05 character (洞)

As raw characters:

洞

As a string of HTML entities:

洞

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 168, hex 0xA8, octal \250, binary 10101000
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 133, hex 0x85, octal \205, binary 10000101
This is continuation byte 3, expecting 0 more.

U+FA05	CJK COMPATIBILITY IDEOGRAPH-FA05
	: 6D1E