MAC Address Lookup
Look up the manufacturer behind a MAC address's OUI prefix, using a curated offline reference of well-known vendors.
This checks against a curated offline list of 173+ well-known vendor prefixes, not the full IEEE registry of over 40,000 assigned OUIs - many valid addresses, especially from smaller or newer manufacturers, won't be found here. For an exhaustive, authoritative lookup, check the official IEEE OUI registry.
Apple
Prefix: F0:EE:7A
Recommended Settings
Pro Tips
- •Only the first three octets (the OUI, or Organizationally Unique Identifier) actually determine the vendor - the rest of the address is device-specific
- •This list is deliberately curated to well-known, commonly encountered consumer and enterprise vendors, verified directly against the official IEEE registry - it's accurate but intentionally not exhaustive
- •Many modern devices use MAC address randomization for privacy (especially phones scanning for Wi-Fi), so a lookup may show 'no match' even for a well-known brand's device
- •A vendor result tells you who manufactured the network interface, not who currently owns or operates the device
Most Popular
Most people look up a MAC address they found in their router's connected devices list to identify an unfamiliar device
When to Use This Tool
Check whether a MAC address in your router's client list matches a well-known manufacturer.
Cross-check a device's stated brand against its MAC address vendor prefix.
See how the first half of a MAC address identifies its manufacturer.
Look up common vendor prefixes without depending on an external lookup service.
How It Works
Normalize the entered MAC address and extract its first three octets (the OUI prefix)
Check that prefix against a curated, offline reference table of well-known vendor OUI assignments verified against the official IEEE registry
Display the matching vendor name, or indicate clearly when there's no match in this curated list
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side offline OUI reference lookup for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
Why does a valid MAC address sometimes show no match?
This tool checks against a curated list of well-known vendors, not the complete IEEE registry of over 40,000 assigned prefixes - a real, valid address from a less common manufacturer simply won't be in this smaller reference list.
Is my MAC address sent to a server?
No, unlike many vendor lookup tools that call a third-party API, this one checks entirely against a list bundled directly in the page - nothing you enter ever leaves your browser.
Why did a modern phone's MAC address show no vendor?
Many phones and laptops now randomize their MAC address for Wi-Fi privacy, so the address you see may not correspond to any registered manufacturer at all.
Where can I look up a vendor not found here?
The official IEEE OUI registry at standards-oui.ieee.org is the authoritative, complete source for every registered vendor prefix.