Block: Enclosed Alphanumeric Supplement

Range U+1F100 - U+1F1FF
Official Chart http://www.unicode.org/charts/PDF/U1F100.pdf
Wikipedia Enclosed Alphanumeric Supplement is a Unicode block consisting Latin alphabet characters and Hindu-Arabic numerals enclosed in circles, ovals or boxes, used for a variety of purposes. It is encoded in the range U+1F100–U+1F1FF in the Supplementary Multilingual Plane. The block is mostly an extension of the Enclosed Alphanumerics block.
https://en.wikipedia.org/wiki/Enclosed_Alphanumeric_Supplement
Characters
🄀 🄁 🄂 🄃 🄄 🄅 🄆 🄇 🄈 🄉 🄊 🄋 🄌 🄍 🄎 🄏 🄐 🄑 🄒 🄓 🄔 🄕 🄖 🄗 🄘 🄙 🄚 🄛 🄜 🄝 🄞 🄟 🄠 🄡 🄢 🄣 🄤 🄥 🄦 🄧 🄨 🄩 🄪 🄫 🄬 🄭 🄮 🄯 🄰 🄱 🄲 🄳 🄴 🄵 🄶 🄷 🄸 🄹 🄺 🄻 🄼 🄽 🄾 🄿 🅀 🅁 🅂 🅃 🅄 🅅 🅆 🅇 🅈 🅉 🅊 🅋 🅌 🅍 🅎 🅏 🅐 🅑 🅒 🅓 🅔 🅕 🅖 🅗 🅘 🅙 🅚 🅛 🅜 🅝 🅞 🅟 🅠 🅡 🅢 🅣 🅤 🅥 🅦 🅧 🅨 🅩 🅪 🅫 🅬 🅭 🅮 🅯 🅰 🅱 🅲 🅳 🅴 🅵 🅶 🅷 🅸 🅹 🅺 🅻 🅼 🅽 🅾 🅿 🆀 🆁 🆂 🆃 🆄 🆅 🆆 🆇 🆈 🆉 🆊 🆋 🆌 🆍 🆎 🆏 🆐 🆑 🆒 🆓 🆔 🆕 🆖 🆗 🆘 🆙 🆚 🆛 🆜 🆝 🆞 🆟 🆠 🆡 🆢 🆣 🆤 🆥 🆦 🆧 🆨 🆩 🆪 🆫 🆬 🆭 🆮 🆯 🆰 🆱 🆲 🆳 🆴 🆵 🆶 🆷 🆸 🆹 🆺 🆻 🆼 🆽 🆾 🆿 🇀 🇁 🇂 🇃 🇄 🇅 🇆 🇇 🇈 🇉 🇊 🇋 🇌 🇍 🇎 🇏 🇐 🇑 🇒 🇓 🇔 🇕 🇖 🇗 🇘 🇙 🇚 🇛 🇜 🇝 🇞 🇟 🇠 🇡 🇢 🇣 🇤 🇥 🇦 🇧 🇨 🇩 🇪 🇫 🇬 🇭 🇮 🇯 🇰 🇱 🇲 🇳 🇴 🇵 🇶 🇷 🇸 🇹 🇺 🇻 🇼 🇽 🇾 🇿