MAC Address OUI Lookup

This tool looks up the device manufacturer based on its MAC address. A MAC (Media Access Control) address is a unique identifier assigned to network interfaces for communications on a network. It contains the ID number of the adapter manufacturer in its first half. An Internet standards body, the IEEE, regulates these IDs.

By entering one or more MAC addresses into the tool, you can find out which manufacturer produced the device. This can be useful for various purposes, such as network troubleshooting, hardware identification, and ensuring the authenticity of a device.

To use the tool, enter one or more MAC addresses in the text field, each on a new line, and click “Lookup”. The tool will then display the manufacturer’s name associated with each MAC address. The tool will display an error message if a MAC address is not in the correct format, does not correspond to a known manufacturer, or if you enter more than 100 MAC addresses at once.

Please note that MAC addresses should be in the format of XX:XX:XX:XX:XX:XX, XXXX.XXXX.XXXX, or XX-XX-XX-XX-XX-XX (with or without separators), where X is a hexadecimal digit. The tool ignores any blank lines.

This tool uses a database provided by the IEEE and may not include MAC addresses for very recent or obscure manufacturers.


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