Look Up MAC Address Manufacturer — 38,000+ IEEE Records
A free MAC address tool with a built-in database of 38,000+ IEEE OUI entries covering virtually every network device manufacturer. Look up any vendor by MAC address, generate random addresses for testing and development, and convert between Linux, Windows, Cisco, and raw formats. Instant results, no signup required.
How to Look Up a MAC Address
1
Enter MAC address
Type or paste a MAC address in any format — colons, dashes, dots, or raw hex are all accepted automatically.
2
View vendor info
The manufacturer is identified instantly from the built-in IEEE OUI database. No network request needed.
3
Check MAC type
See whether the address is unicast or multicast, and whether it is universally or locally administered.
4
Bulk processing
Paste multiple MAC addresses to look up all vendors at once. Export results as CSV for documentation.
Identify device manufacturers, generate test MACs, and convert between all standard formats
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