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Network & IP
MAC Address Vendor Lookup
Look up the manufacturer of a device by its MAC address.
What this page is for
Fast browser workflow
Use this tool without registration, downloads, or page clutter.
Consistent workspace
Supported dynamic tools now run in a real interface instead of a fake loading panel.
Private by default
Ideal for quick inspection, transformation, and test data generation alongside temporary email workflows.
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Workspace
Run the tool here
Output
Run the workspace to see the response here.
How to use
- Enter a MAC address.
- Run the lookup.
- Read the vendor and the address-type flags.
About this tool
Look up the vendor that owns a MAC address prefix (OUI) and check whether it is locally administered.
MAC Address Vendor Lookup is part of the TmpMailer Network & IP set — free browser utilities that open instantly, need no account, and pair well with a temporary-email workflow when you just need a quick result.
Common use cases
- Identifying a device from a DHCP lease.
- Spotting a randomised or virtual MAC.
- Auditing a network inventory.
Common questions
Why does my phone show a random MAC?
Modern phones rotate private Wi-Fi addresses for privacy. A locally administered flag usually indicates this.
Can a MAC address be spoofed?
Yes, trivially. Never use a MAC address as a security credential.
Why is the vendor unknown?
The prefix may be unregistered, virtual, or newer than the lookup database.
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