MAC/IP lookup

I was trying to figure out more about a MAC address and found an interesting lookup mechanism:

http://www.8086.net/tools/mac/

To be concise, all lookups on one page:

What's my browser: http://www.cyscape.com/showbrow.aspx?bhcp=1

What's my IP: http://ipid.shat.net/ or http://ip-lookup.net/

What's my MAC: http://www.8086.net/tools/mac/

or http://www.cavebear.com/archive/cavebear/Ethernet/vendor.html