MAC Address Vendor Lookup
Find the vendor for a MAC address from its OUI prefix.
Paste a MAC address in any format and look up the OUI (first 3 bytes) in our built-in database of ~100 popular vendors (Apple, Cisco, Dell, HP, Intel, Microsoft, Samsung, TP-Link, VMware, …). Returns the vendor name when known, or 'Unknown' otherwise.
Common use cases
- Identify the manufacturer of an unknown device on your LAN
- Spot likely VM-generated MACs (VMware 00:50:56, VirtualBox 08:00:27)
- Recognise Raspberry Pi devices on a network (B8:27:EB)
- Quickly answer 'whose laptop is this?' from an ARP table dump
Frequently asked questions
Is the OUI database complete?▾
No — we ship a curated mini-table of about 100 popular vendors for instant offline lookup. The full IEEE OUI registry has tens of thousands of entries; consult standards-oui.ieee.org for unknown vendors.
Are randomised MACs detectable?▾
Modern phones randomise their MAC per network for privacy. Locally administered addresses (second hex digit is 2, 6, A or E) are typically randomised and won't have an OUI vendor.
Can I look up only the OUI prefix?▾
Yes — paste just the first 3 bytes (00:1B:63 or 001B63) and you'll get the vendor.
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