Bing found the following results
MAC Address Vendor Lookup | MAC Address Lookup
URL Encoder and Decoder - webtoolsuite.com
MAC Address Lookup - Free online tool to lookup any MAC address
HTML URL Encoding Reference - W3Schools
MAC Address Lookup Tool - AskApache
Online URL encoder / decoder - urlencode & urldecode Tool - Pre …
What is the character encoding of this file? - Stack Overflow
Yandex — a fast Internet search
HTML URL 编码参考手册 - w3school 在线教程