Comment by nwh

The decoded URL for this submission is http://184.172.10.74/ — the server for Hacker News.

Here's some other encodings you can use for the same address, they're all valid and recognised by most browsers and other software:

http://3098282570/

http://7393249866/

http://0xb8.0xac.0x0a.0x4a/

http://0270.0254.0012.0112/

The source for this comment is an XSS filtering bypass tool by RSnake — http://ha.ckers.org/xsscalc.html