As character names:

U+3004 JAPANESE INDUSTRIAL STANDARD SYMBOL character (〄)

As raw characters:

〄

As a string of HTML entities:

〄

Decoder output:

Byte number 1 is decimal 227, hex 0xE3, octal \343, binary 11100011
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 128, hex 0x80, octal \200, binary 10000000
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 132, hex 0x84, octal \204, binary 10000100
This is continuation byte 2, expecting 0 more.

U+3004	JAPANESE INDUSTRIAL STANDARD SYMBOL