Identify Network Device Manufacturers
Seeing an unknown device connected to your Wi-Fi or corporate network can be alarming. Our MAC Address Lookup tool queries the official IEEE database to instantly identify the manufacturer (vendor) of any network interface card (NIC).
How OUI Lookup Works
A MAC (Media Access Control) address is a unique 12-character identifier assigned to every piece of network hardware. However, the first half of this address is not random:
- The OUI (Organizationally Unique Identifier): The first 3 octets (e.g., `00:1A:2B`) are officially registered to specific vendors (like Apple, Cisco, or Intel) by the IEEE.
- By matching these first characters against our database, the tool can instantly tell you if that mystery device is an iPhone, a smart TV, or a router.
How to Use This Tool
- Upload or Input Data: Select your file or paste your data directly into the tool interface. Everything remains on your device.
- Configure & Process: Adjust any optional settings if necessary. The tool will process your data instantly inside your browser.
- Download Result: Preview the output and click the download or copy button to save your final results.
Frequently Asked Questions
Why does the MAC address not match any vendor?
Modern smartphones (iOS and Android) use 'MAC Randomization' by default to prevent tracking on public Wi-Fi. They generate a fake, private MAC address that does not belong to any registered manufacturer.
Does the format of the MAC address matter?
No, our parser is smart. You can enter the address using colons (`00:1A:2B...`), hyphens (`00-1A-2B...`), or no separators at all. It will parse correctly.
Can a MAC address be faked?
Yes, 'MAC spoofing' is quite easy to perform on most operating systems, so a MAC address alone is not absolute proof of identity.