MAC Lookup
Identify the manufacturer of any network device by its MAC address. Powered by the IEEE OUI database with real-time vendor details.
Paste any 12-character MAC address or partial prefix (e.g., AA:BB:CC).
Submit the MAC address, and wait a few moments while we retrieve the details.
Get the registered MAC address vendor, OUI assignment block, and device type instantly.
The first six characters of every MAC address form the Organizationally Unique Identifier (OUI). This prefix is assigned by the IEEE to hardware manufacturers worldwide. An OUI lookup decodes that sequence so you can trace equipment back to its source, verify authenticity, and separate corporate assets from personal or rogue devices.
Spot unknown or MAC-spoofed devices on your network before they become a risk.
Maintain accurate inventory logs with reliable MAC address vendor mapping.
Confirm device origins, validate DHCP assignments, and resolve IP/MAC conflicts without command-line overhead.
A MAC address may not be found in the IEEE database for several reasons: it could be a spoofed MAC address (manually changed by software), a virtual MAC address (as used by Virtual Machine Hypervisors), or a randomized MAC address (used by iOS, Android, Windows, and macOS for privacy).
It may also originate from a defunct or unregistered vendor, or be a special-purpose or reserved MAC such as multicast (01:00:5E), broadcast (FF:FF:FF), or IPv6 (33:33:00). Finally, it could be a locally administered address — if the second bit of the first byte equals 1 (i.e. the second hex character is 2, 3, 6, 7, A, B, E, or F), it will not appear in the IEEE database.
Real blocks pulled from our copy of the IEEE registry, the same data this tool searches. Every router, phone and laptop on your network carries one of these prefixes. The guide to reading MAC lookup results breaks down each field.
| Vendor | OUI Prefix | Registry Block |
|---|---|---|
| Apple, Inc. | 30:82:16 | MA-L (24-bit) |
| Cisco Systems, Inc | 5C:3E:06 | MA-L (24-bit) |
| Intel Corporate | 44:49:88 | MA-L (24-bit) |
| TP-LINK Technologies | AC:84:C6 | MA-L (24-bit) |
| Samsung Electronics | 24:09:35 | MA-L (24-bit) |
| Xiaomi | 8C:D0:B2 | MA-L (24-bit) |
| Dell EMC | 00:15:30 | MA-L (24-bit) |
| NETGEAR | 40:5D:82 | MA-L (24-bit) |
| Raspberry Pi Trading | DC:A6:32 | MA-L (24-bit) |
| Google, Inc. | 60:70:6C | MA-L (24-bit) |
In Windows, open Command Prompt and run ipconfig /all. The Physical Address under your active adapter is the MAC.
macOS labels it Wi-Fi Address under System Settings → Network → Wi-Fi → Details. From a terminal, ifconfig en0 | grep ether gets the same value.
Linux puts it in the link/ether line of ip link output.
Can a MAC lookup identify the exact device?
No. The OUI narrows an address to its manufacturer, not to a specific unit. Two laptops from the same vendor return the same result.
Why did my lookup come back empty?
If the second hex character is 2, 3, 6, 7, A, B, E or F, the address is locally administered and never appears in the registry. Randomised privacy MACs from iOS, Android, Windows and macOS, virtual MACs from hypervisors, spoofed addresses and reserved ranges like multicast (01:00:5E) or IPv6 (33:33:00) also come back empty, and that's the address working as designed rather than a lookup failure.
What do MA-L, MA-M and MA-S mean?
They're the three block sizes the IEEE hands out. MA-L is the large 24-bit block, MA-M the medium 28-bit block and MA-S the small 36-bit block. Our tool checks all three lengths, so a narrow match on a newer device still resolves.
How fresh is the OUI data?
Results carry an import batch and last-updated time, straight from our copy of the IEEE registry. If a very new device misses, its block may not have existed at the last import.
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