As character names:

U+2BCF ROTATED WHITE FOUR POINTED CUSP 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 175, hex 0xAF, octal \257, binary 10101111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 2, expecting 0 more.

U+2BCF	ROTATED WHITE FOUR POINTED CUSP
	x (square lozenge - 2311)