Bing found the following results
MAC Address Vendor Lookup | MAC Address Lookup
URL Encoder & Decoder - HTMLStrip
MAC Address Lookup - Free online tool to lookup any MAC address
HTML URL Encoding Reference - W3Schools
MAC Address Lookup Tool - AskApache
What is the character encoding of this file? - Stack Overflow
URL 编码 | Sank's blog
GitHub - aayi/The-Tale-of-Li-Wa: People living in the digital age ...
网址请求中用的是什么编码? - 知乎
百度一下