As character names:

U+1A6C TAI THAM VOWEL SIGN OA BELOW character (ᩬ)

As raw characters:

ᩬ

As a string of HTML entities:

ᩬ

Decoder output:

Byte number 1 is decimal 225, hex 0xE1, octal \341, binary 11100001
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 169, hex 0xA9, octal \251, binary 10101001
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 172, hex 0xAC, octal \254, binary 10101100
This is continuation byte 2, expecting 0 more.

U+1A6C	TAI THAM VOWEL SIGN OA BELOW