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MAC Address Lookup

Look up the manufacturer/vendor of any MAC address or OUI prefix. Enter a MAC address to identify the network adapter vendor from the IEEE OUI database.

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How to Use MAC Address Lookup

  1. 1

    Enter a MAC address

    Type or paste a MAC address in any format: 00:1A:2B:3C:4D:5E, 00-1A-2B-3C-4D-5E, or 001A2B3C4D5E.

  2. 2

    See the vendor

    The first 3 bytes (OUI) identify the manufacturer — Apple, Intel, Cisco, etc.

  3. 3

    Look up by OUI prefix

    Enter just the first 3 bytes (6 hex chars) to look up a manufacturer prefix.

Frequently Asked Questions

What is an OUI?
An OUI (Organizationally Unique Identifier) is the first 24 bits (3 bytes) of a MAC address assigned to a manufacturer by the IEEE. It identifies the vendor of the network hardware.
Why would I look up a MAC address?
MAC lookup helps identify unknown devices on your network, verify hardware authenticity, and troubleshoot network issues.

Embed This Tool

Add this tool to your website for free. Just copy and paste the code below:

<iframe src="https://utilko.com/embed/mac-address-lookup/" width="100%" height="500" frameborder="0" title="MAC Address Lookup"></iframe>

About MAC Address Lookup

The MAC Address Lookup tool on Utilko identifies the manufacturer of any network device from its MAC address OUI prefix. Enter a full MAC address or just the first 3 bytes to instantly see the registered vendor from the IEEE OUI database.

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