Unicode Character 'IDEOGRAPHIC SPACE' (U+3000)

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Do not use this character in domain names. Browsers are blacklisting it because of the potential for phishing.
Unicode Data
Name IDEOGRAPHIC SPACE
Block CJK Symbols and Punctuation
Category Separator, Space [Zs]
Combine 0
BIDI Whitespace [WS]
Decomposition <wide> SPACE (U+0020)
Mirror N
Index entries Symbols and Punctuation, CJK
IDEOGRAPHIC SPACE
SPACE, IDEOGRAPHIC
Punctuation, CJK Symbols and
CJK Symbols and Punctuation
See Also space U+0020
Version Unicode 1.1.0 (June, 1993)
Encodings
HTML Entity (decimal) &#12288;
HTML Entity (hex) &#x3000;
How to type in Microsoft Windows Alt +3000
UTF-8 (hex) 0xE3 0x80 0x80 (e38080)
UTF-8 (binary) 11100011:10000000:10000000
UTF-16 (hex) 0x3000 (3000)
UTF-16 (decimal) 12,288
UTF-32 (hex) 0x00003000 (3000)
UTF-32 (decimal) 12,288
C/C++/Java source code "\u3000"
Python source code u"\u3000"
More...
Java Data
string.toUpperCase()  
string.toLowerCase()  
Character.UnicodeBlock CJK_SYMBOLS_AND_PUNCTUATION
Character.charCount() 1
Character.getDirectionality() DIRECTIONALITY_WHITESPACE [12]
Character.getNumericValue() -1
Character.getType() 12
Character.isDefined() Yes
Character.isDigit() No
Character.isIdentifierIgnorable() No
Character.isISOControl() No
Character.isJavaIdentifierPart() No
Character.isJavaIdentifierStart() No
Character.isLetter() No
Character.isLetterOrDigit() No
Character.isLowerCase() No
Character.isMirrored() No
Character.isSpaceChar() Yes
Character.isSupplementaryCodePoint() No
Character.isTitleCase() No
Character.isUnicodeIdentifierPart() No
Character.isUnicodeIdentifierStart() No
Character.isUpperCase() No
Character.isValidCodePoint() Yes
Character.isWhitespace() Yes