Code point
U+3328
Glyph appearance depends on your fonts.
U+3328
So<square> 30CA 30CEU+3328 SQUARE NANO is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+3328
13096
㌨
㌨
E3 8C A8
3328
00003328
%E3%8C%A8
\u3328
\u3328
\u3328
\3328