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) ".
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.
You can enter your MAC address with or without separators ().
You can also search for the name of a manufacturer (at least 3 characters) and get a list of the MAC ranges assigned to the manufacturer.The appointed Expert(s) should monitor for this condition and notify IANA.These values are prefixed with 00-00-5E to form unicast MAC addresses, with 01-00-5E to form multicast MAC addresses, with 02-00-5E to form unicast modified EUI-64 addresses, and with 03-00-5E to form multicast modified EUI-64 addresses. [RFC2153] described a method of using a "pseudo OUI" for certain purposes when there is no appropriate regular OUI assigned.This database was last updated on An OUI is a 24-bit number that uniquely identifies a vendor or manufacturer. The OUI is basically the first three octets of a MAC address..pass_color_to_child_links a.u-inline.u-margin-left--xs.u-margin-right--sm.u-padding-left--xs.u-padding-right--xs.u-relative.u-absolute.u-absolute--center.u-width--100.u-flex-inline.u-flex-align-self--center.u-flex-justify--between.u-serif-font-main--regular.js-wf-loaded .u-serif-font-main--regular.amp-page .u-serif-font-main--regular.u-border-radius--ellipse.u-hover-bg--black-transparent.web_page .u-hover-bg--black-transparent:hover. 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.This identifier is assigned by the IEEE to manufacturers of network devices.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.