Fullwidth Digit Zero
HTML Entity Browser Test:

U+FF10 is the Unicode hex value of the character Fullwidth Digit Zero, which is categorized as "decimal digit number" in the Unicode 6.0 character table.

In addition, U+FF10 is a composite character comprising of one or more other Unicode characters modified or combined.

Unicode Character Information
Unicode Hex U+FF10
General Category Decimal Digit Number [Code: Nd]
Canonical Combining Class 0
Bidirectional Category EN
Decomposition Mapping <wide> 0030
Mirrored N
Unicode Character Encodings
Fullwidth Digit Zero HTML Entity &#65296; (decimal entity), &#xFF10; (hex entity)
Windows Key Code Alt 65296 or Alt +FF101
Programming Source Code Encodings Python hex: u"\uFF10", Hex for C++ and Java: "\uFF10"
UTF-8 Hexadecimal Encoding 0xEFBC90
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 65296) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +FF10) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Fullwidth Digit Zero character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.