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MAC vendor lookup
Identify the manufacturer of any network device by entering its MAC address or OUI prefix. The database includes over 50 000 entries from the IEEE registry, updated regularly.
What it is
MAC vendor is derived from the first three bytes (OUI). It helps identify the manufacturer of a device.
How it works
Enter a MAC or OUI (e.g., 00:1A:2B). You will get the vendor name from the OUI database.
Examples
FC:FB:FB→ Meta Platforms (example).00:1B:63→ Cisco Systems (example).
Limitations & notes
Vendor does not imply model or device type. Old/non-standard prefixes may be missing.
FAQ
- Can I identify the exact device model from a MAC address? No. A MAC address only reveals the manufacturer (vendor) that was assigned the OUI prefix by IEEE. The specific device model, firmware version or configuration cannot be determined from the MAC address alone.
- What is OUI? OUI (Organizationally Unique Identifier) is the first 24 bits (3 bytes) of a MAC address, assigned by IEEE to hardware manufacturers. For example, 00:1A:2B always belongs to the same vendor. Our database contains over 50,000 OUI entries updated from the IEEE registry.
- Are MAC addresses unique? In theory, every network interface has a globally unique MAC address. In practice, some devices allow changing (spoofing) their MAC, and some virtual machines generate random addresses. Modern mobile operating systems also randomize MAC addresses for privacy when scanning Wi-Fi networks.
- What does a MAC address look like? A MAC address is a 48-bit identifier usually written as six pairs of hexadecimal digits separated by colons or hyphens, e.g. 00:1A:2B:3C:4D:5E. The first half identifies the manufacturer, the second half is the unique device serial number within that vendor's allocation.