Block: Enclosed CJK Letters and Months

Range U+3200 - U+32FF
Official Chart http://www.unicode.org/charts/PDF/U3200.pdf
Wikipedia Enclosed CJK Letters and Months is a Unicode block containing circled and parenthesized Katakana, Hangul, and CJK ideographs. During the unification with ISO 10646 for version 1.1, the Japanese Industrial Standard Symbol was reassigned from the code point U+32FF at the end of the block to U+3004. Also included in the block are miscellaneous glyphs that would more likely fit in CJK Compatibility or Enclosed Alphanumerics: a few unit abbreviations, circled numbers from 21 to 50, and circled multiples of 10 from 10 to 80 enclosed in black squares (representing speed limit signs).
https://en.wikipedia.org/wiki/Enclosed_CJK_Letters_and_Months
Characters