As zawhtut mentioned, this page has a reference for several unicode ranges. To summarize the ranges:
- Japanese-style punctuation ( 3000 – 303f)
- Hiragana ( 3040 – 309f)
- Katakana ( 30a0 – 30ff)
- Full-width roman characters and half-width katakana ( ff00 – ffef)
- CJK unifed ideographs – Common and uncommon kanji ( 4e00 – 9faf)