For a manufacturer search using a MAC address, at least the first 3 bytes (6 characters) of your MAC address are required.If even the smallest address ranges assigned by the IEEE are to be searched, the first 5 bytes (20 characters) of your MAC address are required.The MAC address is a 24 bit (12 characters) long identifier of network devices, which is also called Organizationally Unique Identifier (OUI) or MA-L.
Alternatively, you can enter the name of a manufacturer in the search and receive a list of MAC ranges assigned to the manufacturer.
Under Linux or mac OS open a console/terminal window and enter (Linux) ".
The registry for these is on the PPP Parameters IANA web page.
The CF series registry has been closed by [RFC5342].
This program displays the name of the company that manufactured your network card.
You can also do a reverse lookup and find the MAC addresses registered by a company.
Unicast addresses under the IANA OUI start with 00-00-5E, while multicast addresses under the IANA OUI start with 01-00-5E.
In the lists below, these initial 3 bytes are omitted for brevity.
The data displayed here are provided by the IEEE and have been prepared by us for the search function.
This page has assignments by IANA as specified in [RFC7042] to be under the IANA OUI.