This about how to lookup the vendor name from the only Mac Address.
As we all know Mac address has a Prefix part that shows who is the vendor of the device?
So basically this website does a lot of things related to this topic.
First, if you have Mac address and you want to look up its vendor then just go to the website and search mac address.
Mac Vendor Lookup
Also, they provide nice portable small window App. that can detect all installed Network interface controller (NIC) on your PC and give you, it's vendor name based on their API.
You can download this tool from it's link here:
Macvendor.co Lookup 0.3
hope it helps someone.