As character names:

U+2368 APL FUNCTIONAL SYMBOL TILDE DIAERESIS character (⍨)

As raw characters:

⍨

As a string of HTML entities:

⍨

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 141, hex 0x8D, octal \215, binary 10001101
This is continuation byte 1, expecting 1 more.

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

U+2368	APL FUNCTIONAL SYMBOL TILDE DIAERESIS
	= smirk