As character names:

U+A8F9 DEVANAGARI GAP FILLER character (꣹)

As raw characters:

꣹

As a string of HTML entities:

꣹

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 138, hex 0x8A, octal \212, binary 10001010
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 163, hex 0xA3, octal \243, binary 10100011
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 3, expecting 0 more.

U+A8F9	DEVANAGARI GAP FILLER
	* used to indicate that a gap in a manuscript or text is not a lacuna