Block: Katakana Phonetic Extensions

Range U+31F0 - U+31FF
Official Chart http://www.unicode.org/charts/PDF/U31F0.pdf
Wikipedia Katakana Phonetic Extensions is a Unicode block containing additional katakana characters for writing the Ainu language, in addition to characters in the Katakana block.
https://en.wikipedia.org/wiki/Katakana_Phonetic_Extensions
Characters