C.2. Escaping Unsafe Characters

Any unsafe characters in the URL need to be escaped, or substituted with a special sequence of characters.
For example, a space is an unsafe character that must be represented as %20 within the URL. Thus, the distinguished name o=example.com corporation must be encoded as o=example.com%20corporation.
The following table lists the characters that are considered unsafe within URLs and provides the associated escape characters to use in place of the unsafe character:
Unsafe Character Escape Characters
space %20
< %3c
> %3e
" %22
# %23
% %25
{ %7b
} %7d
| %7c
\ %5c
^ %5e
~ %7e
[ %5b
] %5d
` %60