Code point
U+3248
Glyph appearance depends on your fonts.
U+3248
NoU+3248 CIRCLED NUMBER TEN ON BLACK SQUARE is a Unicode 16.0.0 character in the Other Number category. It belongs to the Enclosed CJK Letters and Months block.
Choose the representation you need, then copy its value.
U+3248
12872
㉈
㉈
E3 89 88
3248
00003248
%E3%89%88
\u3248
\u3248
\u3248
\3248