CJK Radicals Supplement is a Unicode block containing alternative,
often positional, forms of the Kangxi radicals. They are used headers
在字典索引和其他 CJK 表意文字收集组织
彻底中风。
These ranges often contain non-assigned or reserved code points(such as U + 2 E9A , U+2EF4 - 2EFF),
汉字
bottom top reference (also have a look at wiki page) block name
4E00 9FEF http://www.unicode.org/charts/PDF/U4E00.pdf CJK Unified Ideographs
3400 4DBF http://www.unicode.org/charts/PDF/U3400.pdf CJK Unified Ideographs Extension A
20000 2A6DF http://www.unicode.org/charts/PDF/U20000.pdf CJK Unified Ideographs Extension B
2A700 2B73F http://www.unicode.org/charts/PDF/U2A700.pdf CJK Unified Ideographs Extension C
2B740 2B81F http://www.unicode.org/charts/PDF/U2B740.pdf CJK Unified Ideographs Extension D
2B820 2CEAF http://www.unicode.org/charts/PDF/U2B820.pdf CJK Unified Ideographs Extension E
2CEB0 2EBEF https://www.unicode.org/charts/PDF/U2CEB0.pdf CJK Unified Ideographs Extension F
3007 3007 https://zh.wiktionary.org/wiki/%E3%80%87 in block CJK Symbols and Punctuation
In 中日韩越统一表意文字 block, I notice many answers use upper bound 9FCC, but U+9FCD(鿍) is indeed a Chinese char. And all characters in this block are Chinese characters (also used in Japanese or Korean etc.).
中日韩越统一表意文字中的大部分字符(除外显 F 外,外显 F 中只有17% 是中文字符)是繁体中文字符,在中国很少使用。
〇 is the Chinese character form of zero and still in use today
0000 007F https://unicode.org/charts/PDF/U0000.pdf C0 Controls and Basic Latin
2000 206F https://unicode.org/charts/PDF/U2000.pdf General Punctuation
……