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MAC Address Vendor Lookup
Identify manufacturers from MAC prefixes.
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About MAC Address Vendor Lookup
Enter a MAC address and look up its registered vendor from an embedded OUI database.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Mac Vendor Lookup on Wikipedia. More: all security & network.
Frequently Asked Questions about MAC Address Vendor Lookup
Which vendors are recognized?
The tool carries an embedded table of common manufacturers for instant offline lookup. Unknown prefixes link straight out to api.maclookup.app, which queries the full IEEE registry.
What does locally administered mean?
Some MAC addresses are locally assigned rather than burned in by the manufacturer. The tool flags these from the address itself, so you know the vendor field may not apply.
Related Articles & Guides
Sep 16, 2026
MAC Vendor Lookup: Who Made That Device on Your Network
Identify manufacturers from MAC prefixes.
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