In the 7-bit ASCII character set, ASCII code 64 is represented by the character @ also known as the at sign.

Character Representation Value/Description
ASCII Character @
Decimal 64
Octal 100
Hexadecimal 40
Binary 0100 0000
Description At sign
Category Printable Characters
Subcategory Punctuation and Symbols
Unicode U+0040

Encoding

Encoding non-standard letters and characters into values that can be displayed e.g. in browsers

Encoding Method Encoded Value
URL Escape Code %40
Quoted-printable =40