Bing found the following results
HTML URL Encoding Reference - W3Schools
How to know the device type using MAC address? - Super User
What is the character encoding of this file? - Stack Overflow
MAC Address Lookup: Unmask Your MAC - MiniWebtool
MAC Address Lookup Tool - AskApache
Fantastic Danmaku Festival Part II/Music - Touhou Wiki
MAC Address Lookup
URL 编码 | Sank's blog
HTML URL 编码参考手册 - w3school 在线教程
Activate windows - Microsoft Community