MAC Address (Vendor Identifier: OUI)

MAC address (vendor identifier: OUI)

This section introduces how to search for organizations (vendors) that manage OUI from OUI.

Vendors that manufacture equipment are assigned an OUI.

　A list of which OUIs have been assigned to which vendors can be found on the IEEE site, where you can check the correspondence between OUIs and organizations.

By the way, the URL will be the link below.

　http://standards.ieee.org/regauth/oui/oui_public.txt

*Caution: When you open the link, it becomes so heavy that the browser freezes.

If you list only the beginning of the OUI that can be obtained at the link above, it will be as follows.

● List of vendor identifiers (OUI)

There are so many!

Among them, it is difficult to find a specific vendor from OUI.

Therefore, it is now possible to search for organizations from OUI on the IEEE site.

You can search at the link below.

　http://standards.ieee.org/regauth/oui/index.shtml

Multiple OUIs

　”Nintendo DS” has sold over 20 million units in Japan alone. In other words, one OUI can handle only about 16 million MAC addresses, and one OUI is not enough.

Vendors apply for OUI quotas and obtain multiple OUIs. Search for “NINTENDO” on the link I introduced above and check it out. Then you can see that the OUI below is acquired.

● “Nintendo” vendor identifier (OUI) list