IEEE OUI and Company_id Assignments
- The below public listings should be searched prior to applying for an OUI or IAB. Searching the list will allow you to determine whether your company or any parent/subsidiary companies already own an assignment. When searching the public listings, addresses should be entered as XX-XX-XX.
What can you do with this? Well, if you know someone's IP address, say like our Mr. Spammer on the Shout Box, you can ping it. The MAC address of their network card will be returned to you. Take the first half of the card's identifier and enter it here. You conveniently get the name of the company that made it and their address. Useful in many ways.