As character names:

U+20DB COMBINING THREE DOTS ABOVE 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 131, hex 0x83, octal \203, binary 10000011
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 155, hex 0x9B, octal \233, binary 10011011
This is continuation byte 2, expecting 0 more.

U+20DB	COMBINING THREE DOTS ABOVE
	= third derivative