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Look up MAC vendor from OUI prefix. Use for device ID; for new MACs use mac-address-generator. Input: MAC address. Returns vendor. 100% client-side.
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Looks up the manufacturer or vendor associated with a MAC address by matching its first 3 bytes (OUI prefix) against a built-in database of over 200 common vendors. Supports partial matching when no exact OUI is found.
Identifying device manufacturers from MAC addresses helps with network inventory, security auditing, and troubleshooting. This tool provides instant vendor lookup without requiring an external API call.
This tool is part of the DevStackIO platform — a collection of free online developer tools from DevStackIO. Browse more free developer resources on DevStackIO.
Network administrators identifying unknown devices on their network, security analysts investigating MAC addresses in logs, and IT support staff tracking hardware inventory.
Enter a MAC address in any common format (colon-separated, dash-separated, or dot-separated)
Press Lookup to search the built-in OUI database
View the vendor/manufacturer associated with the MAC prefix
Click the result to copy the vendor name to your clipboard
For a partial match, review the closest prefixes shown to narrow down the vendor
Input: '00:50:56:AA:BB:CC' — Output: Vendor: VMwareInput: 'DC:A6:32:11:22:33' — Output: Vendor: Raspberry Pi FoundationInput: '00:0C:29:44:55:66' — Output: Vendor: VMwareWhy is my MAC not found?
The built-in database covers 200+ common vendors. For a complete lookup, try a service like IEEE's OUI registry.
What is an OUI?
Organizationally Unique Identifier, the first 24 bits of a MAC address assigned to hardware manufacturers by IEEE.
Can a MAC address be spoofed?
Yes, software can change the reported MAC address, so the vendor lookup shows the manufacturer of the original hardware, not necessarily the current configuration.
Authoritative specifications, standards, and in-depth reading for MAC Address Lookup.
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