OUI
IEEE registry
Matches against more than 54,000 MA-L, MA-M and MA-S blocks published by the IEEE.
Enter one or more MAC addresses to find the manufacturer, its registered address and country, plus whether the address is unicast or multicast and globally or locally administered. Lookups run in your browser against the bundled IEEE vendor registry, so the addresses you check never leave your device. Choose how converted addresses are formatted.
Matches against more than 54,000 MA-L, MA-M and MA-S blocks published by the IEEE.
Paste a whole list from logs, DHCP leases or ARP tables and get every vendor at once.
Reads colon, hyphen, Cisco dot and plain hex notation, in upper or lower case.
Shows unicast or multicast and global or locally administered, so randomized MACs stand out.
Every result lists the address in all four notations, ready to copy into configs or tests.
The vendor database ships with the page. Nothing you enter is sent to a server.
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