Enclosed CJK Letters and Months
Block from U+3200 to U+32FF. This block was introduced in Unicode version 1.1 (1993). It contains 255 codepoints.
The Wikipedia provides the following information on block Enclosed CJK Letters and Months:
Enclosed CJK Letters and Months is a Unicode block containing circled and parenthesized Katakana, Hangul, and CJK ideographs. 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.
Chart at Unicode.org (PDF)
Block at Decode Unicode

Parenthesized Hangul KiyeokGlyph for U+3200 
Parenthesized Hangul NieunGlyph for U+3201 
Parenthesized Hangul TikeutGlyph for U+3202 
Parenthesized Hangul RieulGlyph for U+3203 
Parenthesized Hangul MieumGlyph for U+3204 
Parenthesized Hangul PieupGlyph for U+3205 
Parenthesized Hangul SiosGlyph for U+3206 
Parenthesized Hangul IeungGlyph for U+3207 
Parenthesized Hangul CieucGlyph for U+3208 
Parenthesized Hangul ChieuchGlyph for U+3209 
Parenthesized Hangul KhieukhGlyph for U+320A 
Parenthesized Hangul ThieuthGlyph for U+320B 
Parenthesized Hangul PhieuphGlyph for U+320C 
Parenthesized Hangul HieuhGlyph for U+320D 
Parenthesized Hangul Kiyeok AGlyph for U+320E 
Parenthesized Hangul Nieun AGlyph for U+320F 
Parenthesized Hangul Tikeut AGlyph for U+3210 
Parenthesized Hangul Rieul AGlyph for U+3211 
Parenthesized Hangul Mieum AGlyph for U+3212 
Parenthesized Hangul Pieup AGlyph for U+3213 
Parenthesized Hangul Sios AGlyph for U+3214 
Parenthesized Hangul Ieung AGlyph for U+3215 
Parenthesized Hangul Cieuc AGlyph for U+3216 
Parenthesized Hangul Chieuch AGlyph for U+3217 
Parenthesized Hangul Khieukh AGlyph for U+3218 
Parenthesized Hangul Thieuth AGlyph for U+3219 
Parenthesized Hangul Phieuph AGlyph for U+321A 
Parenthesized Hangul Hieuh AGlyph for U+321B 
Parenthesized Hangul Cieuc UGlyph for U+321C 
Parenthesized Korean Character OjeonGlyph for U+321D 
Parenthesized Korean Character O HuGlyph for U+321E  U+321F

Parenthesized Ideograph OneGlyph for U+3220 
Parenthesized Ideograph TwoGlyph for U+3221 
Parenthesized Ideograph ThreeGlyph for U+3222 
Parenthesized Ideograph FourGlyph for U+3223 
Parenthesized Ideograph FiveGlyph for U+3224 
Parenthesized Ideograph SixGlyph for U+3225 
Parenthesized Ideograph SevenGlyph for U+3226 
Parenthesized Ideograph EightGlyph for U+3227 
Parenthesized Ideograph NineGlyph for U+3228 
Parenthesized Ideograph TenGlyph for U+3229 
Parenthesized Ideograph MoonGlyph for U+322A 
Parenthesized Ideograph FireGlyph for U+322B 
Parenthesized Ideograph WaterGlyph for U+322C 
Parenthesized Ideograph WoodGlyph for U+322D 
Parenthesized Ideograph MetalGlyph for U+322E 
Parenthesized Ideograph EarthGlyph for U+322F 
Parenthesized Ideograph SunGlyph for U+3230 
Parenthesized Ideograph StockGlyph for U+3231 
Parenthesized Ideograph HaveGlyph for U+3232 
Parenthesized Ideograph SocietyGlyph for U+3233 
Parenthesized Ideograph NameGlyph for U+3234 
Parenthesized Ideograph SpecialGlyph for U+3235 
Parenthesized Ideograph FinancialGlyph for U+3236 
Parenthesized Ideograph CongratulationGlyph for U+3237 
Parenthesized Ideograph LaborGlyph for U+3238 
Parenthesized Ideograph RepresentGlyph for U+3239 
Parenthesized Ideograph CallGlyph for U+323A 
Parenthesized Ideograph StudyGlyph for U+323B 
Parenthesized Ideograph SuperviseGlyph for U+323C 
Parenthesized Ideograph EnterpriseGlyph for U+323D 
Parenthesized Ideograph ResourceGlyph for U+323E 
Parenthesized Ideograph AllianceGlyph for U+323F 
Parenthesized Ideograph FestivalGlyph for U+3240 
Parenthesized Ideograph RestGlyph for U+3241 
Parenthesized Ideograph SelfGlyph for U+3242 
Parenthesized Ideograph ReachGlyph for U+3243 
Circled Ideograph QuestionGlyph for U+3244 
Circled Ideograph KindergartenGlyph for U+3245 
Circled Ideograph SchoolGlyph for U+3246 
Circled Ideograph KotoGlyph for U+3247 
Circled Number Ten On Black SquareGlyph for U+3248 
Circled Number Twenty On Black SquareGlyph for U+3249 
Circled Number Thirty On Black SquareGlyph for U+324A 
Circled Number Forty On Black SquareGlyph for U+324B 
Circled Number Fifty On Black SquareGlyph for U+324C 
Circled Number Sixty On Black SquareGlyph for U+324D 
Circled Number Seventy On Black SquareGlyph for U+324E 
Circled Number Eighty On Black SquareGlyph for U+324F 
Partnership SignGlyph for U+3250 
Circled Number Twenty OneGlyph for U+3251 
Circled Number Twenty TwoGlyph for U+3252 
Circled Number Twenty ThreeGlyph for U+3253 
Circled Number Twenty FourGlyph for U+3254 
Circled Number Twenty FiveGlyph for U+3255 
Circled Number Twenty SixGlyph for U+3256 
Circled Number Twenty SevenGlyph for U+3257 
Circled Number Twenty EightGlyph for U+3258 
Circled Number Twenty NineGlyph for U+3259 
Circled Number ThirtyGlyph for U+325A 
Circled Number Thirty OneGlyph for U+325B 
Circled Number Thirty TwoGlyph for U+325C 
Circled Number Thirty ThreeGlyph for U+325D 
Circled Number Thirty FourGlyph for U+325E 
Circled Number Thirty FiveGlyph for U+325F 
Circled Hangul KiyeokGlyph for U+3260 
Circled Hangul NieunGlyph for U+3261 
Circled Hangul TikeutGlyph for U+3262 
Circled Hangul RieulGlyph for U+3263 
Circled Hangul MieumGlyph for U+3264 
Circled Hangul PieupGlyph for U+3265 
Circled Hangul SiosGlyph for U+3266 
Circled Hangul IeungGlyph for U+3267 
Circled Hangul CieucGlyph for U+3268 
Circled Hangul ChieuchGlyph for U+3269 
Circled Hangul KhieukhGlyph for U+326A 
Circled Hangul ThieuthGlyph for U+326B 
Circled Hangul PhieuphGlyph for U+326C 
Circled Hangul HieuhGlyph for U+326D 
Circled Hangul Kiyeok AGlyph for U+326E 
Circled Hangul Nieun AGlyph for U+326F 
Circled Hangul Tikeut AGlyph for U+3270 
Circled Hangul Rieul AGlyph for U+3271 
Circled Hangul Mieum AGlyph for U+3272 
Circled Hangul Pieup AGlyph for U+3273 
Circled Hangul Sios AGlyph for U+3274 
Circled Hangul Ieung AGlyph for U+3275 
Circled Hangul Cieuc AGlyph for U+3276 
Circled Hangul Chieuch AGlyph for U+3277 
Circled Hangul Khieukh AGlyph for U+3278 
Circled Hangul Thieuth AGlyph for U+3279 
Circled Hangul Phieuph AGlyph for U+327A 
Circled Hangul Hieuh AGlyph for U+327B 
Circled Korean Character ChamkoGlyph for U+327C 
Circled Korean Character JueuiGlyph for U+327D 
Circled Hangul Ieung UGlyph for U+327E 
Korean Standard SymbolGlyph for U+327F 
Circled Ideograph OneGlyph for U+3280 
Circled Ideograph TwoGlyph for U+3281 
Circled Ideograph ThreeGlyph for U+3282 
Circled Ideograph FourGlyph for U+3283 
Circled Ideograph FiveGlyph for U+3284 
Circled Ideograph SixGlyph for U+3285 
Circled Ideograph SevenGlyph for U+3286 
Circled Ideograph EightGlyph for U+3287 
Circled Ideograph NineGlyph for U+3288 
Circled Ideograph TenGlyph for U+3289 
Circled Ideograph MoonGlyph for U+328A 
Circled Ideograph FireGlyph for U+328B 
Circled Ideograph WaterGlyph for U+328C 
Circled Ideograph WoodGlyph for U+328D 
Circled Ideograph MetalGlyph for U+328E 
Circled Ideograph EarthGlyph for U+328F 
Circled Ideograph SunGlyph for U+3290 
Circled Ideograph StockGlyph for U+3291 
Circled Ideograph HaveGlyph for U+3292 
Circled Ideograph SocietyGlyph for U+3293 
Circled Ideograph NameGlyph for U+3294 
Circled Ideograph SpecialGlyph for U+3295 
Circled Ideograph FinancialGlyph for U+3296 
Circled Ideograph CongratulationGlyph for U+3297 
Circled Ideograph LaborGlyph for U+3298 
Circled Ideograph SecretGlyph for U+3299 
Circled Ideograph MaleGlyph for U+329A 
Circled Ideograph FemaleGlyph for U+329B 
Circled Ideograph SuitableGlyph for U+329C 
Circled Ideograph ExcellentGlyph for U+329D 
Circled Ideograph PrintGlyph for U+329E 
Circled Ideograph AttentionGlyph for U+329F 
Circled Ideograph ItemGlyph for U+32A0 
Circled Ideograph RestGlyph for U+32A1 
Circled Ideograph CopyGlyph for U+32A2 
Circled Ideograph CorrectGlyph for U+32A3 
Circled Ideograph HighGlyph for U+32A4 
Circled Ideograph CentreGlyph for U+32A5 
Circled Ideograph LowGlyph for U+32A6 
Circled Ideograph LeftGlyph for U+32A7 
Circled Ideograph RightGlyph for U+32A8 
Circled Ideograph MedicineGlyph for U+32A9 
Circled Ideograph ReligionGlyph for U+32AA 
Circled Ideograph StudyGlyph for U+32AB 
Circled Ideograph SuperviseGlyph for U+32AC 
Circled Ideograph EnterpriseGlyph for U+32AD 
Circled Ideograph ResourceGlyph for U+32AE 
Circled Ideograph AllianceGlyph for U+32AF 
Circled Ideograph NightGlyph for U+32B0 
Circled Number Thirty SixGlyph for U+32B1 
Circled Number Thirty SevenGlyph for U+32B2 
Circled Number Thirty EightGlyph for U+32B3 
Circled Number Thirty NineGlyph for U+32B4 
Circled Number FortyGlyph for U+32B5 
Circled Number Forty OneGlyph for U+32B6 
Circled Number Forty TwoGlyph for U+32B7 
Circled Number Forty ThreeGlyph for U+32B8 
Circled Number Forty FourGlyph for U+32B9 
Circled Number Forty FiveGlyph for U+32BA 
Circled Number Forty SixGlyph for U+32BB 
Circled Number Forty SevenGlyph for U+32BC 
Circled Number Forty EightGlyph for U+32BD 
Circled Number Forty NineGlyph for U+32BE 
Circled Number FiftyGlyph for U+32BF 
Ideographic Telegraph Symbol for JanuaryGlyph for U+32C0 
Ideographic Telegraph Symbol for FebruaryGlyph for U+32C1 
Ideographic Telegraph Symbol for MarchGlyph for U+32C2 
Ideographic Telegraph Symbol for AprilGlyph for U+32C3 
Ideographic Telegraph Symbol for MayGlyph for U+32C4 
Ideographic Telegraph Symbol for JuneGlyph for U+32C5 
Ideographic Telegraph Symbol for JulyGlyph for U+32C6 
Ideographic Telegraph Symbol for AugustGlyph for U+32C7 
Ideographic Telegraph Symbol for SeptemberGlyph for U+32C8 
Ideographic Telegraph Symbol for OctoberGlyph for U+32C9 
Ideographic Telegraph Symbol for NovemberGlyph for U+32CA 
Ideographic Telegraph Symbol for DecemberGlyph for U+32CB 
Square HgGlyph for U+32CC 
Square ErgGlyph for U+32CD 
Square EvGlyph for U+32CE 
Limited Liability SignGlyph for U+32CF 
Circled Katakana AGlyph for U+32D0 
Circled Katakana IGlyph for U+32D1 
Circled Katakana UGlyph for U+32D2 
Circled Katakana EGlyph for U+32D3 
Circled Katakana OGlyph for U+32D4 
Circled Katakana KaGlyph for U+32D5 
Circled Katakana KiGlyph for U+32D6 
Circled Katakana KuGlyph for U+32D7 
Circled Katakana KeGlyph for U+32D8 
Circled Katakana KoGlyph for U+32D9 
Circled Katakana SaGlyph for U+32DA 
Circled Katakana SiGlyph for U+32DB 
Circled Katakana SuGlyph for U+32DC 
Circled Katakana SeGlyph for U+32DD 
Circled Katakana SoGlyph for U+32DE 
Circled Katakana TaGlyph for U+32DF 
Circled Katakana TiGlyph for U+32E0 
Circled Katakana TuGlyph for U+32E1 
Circled Katakana TeGlyph for U+32E2 
Circled Katakana ToGlyph for U+32E3 
Circled Katakana NaGlyph for U+32E4 
Circled Katakana NiGlyph for U+32E5 
Circled Katakana NuGlyph for U+32E6 
Circled Katakana NeGlyph for U+32E7 
Circled Katakana NoGlyph for U+32E8 
Circled Katakana HaGlyph for U+32E9 
Circled Katakana HiGlyph for U+32EA 
Circled Katakana HuGlyph for U+32EB 
Circled Katakana HeGlyph for U+32EC 
Circled Katakana HoGlyph for U+32ED 
Circled Katakana MaGlyph for U+32EE 
Circled Katakana MiGlyph for U+32EF 
Circled Katakana MuGlyph for U+32F0 
Circled Katakana MeGlyph for U+32F1 
Circled Katakana MoGlyph for U+32F2 
Circled Katakana YaGlyph for U+32F3 
Circled Katakana YuGlyph for U+32F4 
Circled Katakana YoGlyph for U+32F5 
Circled Katakana RaGlyph for U+32F6 
Circled Katakana RiGlyph for U+32F7 
Circled Katakana RuGlyph for U+32F8 
Circled Katakana ReGlyph for U+32F9 
Circled Katakana RoGlyph for U+32FA 
Circled Katakana WaGlyph for U+32FB 
Circled Katakana WiGlyph for U+32FC 
Circled Katakana WeGlyph for U+32FD 
Circled Katakana WoGlyph for U+32FE 
Square Era Name ReiwaGlyph for U+32FF