MAC Address Lookup
Find out which company made a network device from its MAC address — and spot random “private” addresses.
At a glance
- Finds the maker of a MAC address from the IEEE registry — over 54,000 assigned blocks, including the smaller MA-M and MA-S blocks.
- Paste one address or hundreds (one per line) — in any format: AA:BB:CC…, aa-bb-cc…, aabb.ccdd.eeff or plain.
- Explains random “private” addresses that phones and laptops use on Wi-Fi, and multicast and broadcast addresses.
- Shows the address in other formats with copy buttons, and the IPv6 interface ID and link-local address it would make.
- A generator makes random addresses for virtual machines and testing, or addresses under a chosen maker prefix.
- Works on your device: the vendor list loads once and the addresses you type are never sent anywhere.
Step by step
How to look up a MAC address
- 1
Copy the address
Find it in your router’s device list, or in the device’s network settings.
- 2
Paste it
Paste one address, or a list with one per line.
- 3
Look up
Press Look up to see the maker, its country and the registry block.
Features
Everything you need, nothing you don’t
Official IEEE data
MA-L, MA-M and MA-S assignments, most specific match first.
Bulk lookup
Check a whole router client list or ARP table at once.
Private addresses explained
Recognises randomised Wi-Fi addresses that hide the maker.
Any format
Colons, hyphens, Cisco dots or none — converted for you.
IPv6 link-local
The modified EUI-64 interface ID a MAC produces.
MAC generator
Random, locally administered unicast addresses, or under a maker’s prefix.
How to find a device’s MAC address
| Device | Where to look |
|---|---|
| Windows | Open Command Prompt and type ipconfig /all — “Physical Address”. |
| Mac | System Settings → Network → your connection → Details → Hardware. |
| iPhone / iPad | Settings → General → About → Wi-Fi Address (or the network’s “Private Wi-Fi Address”). |
| Android | Settings → About phone → Status (or Wi-Fi network details → MAC address). |
| Linux | Run ip link — the “link/ether” value. |
| Router | The list of connected devices in its web page or app. |
Why does my phone show an unknown maker?
Phones, tablets and Windows laptops now use a different random MAC address for each Wi-Fi network, so they can’t be tracked between networks. Such addresses have the “locally administered” bit set — the second digit is 2, 6, A or E — and belong to no maker. That is normal, and the lookup says so.
About the IEEE registry
The first half of a MAC address is an Organizationally Unique Identifier (OUI) that the IEEE Registration Authority assigns to manufacturers. Large blocks (MA-L) cover 16.7 million addresses; smaller MA-M and MA-S blocks go to smaller makers. Some companies pay to keep their name private, shown here as “Private”.
FAQ
Frequently asked questions
What does a MAC address lookup tell me?
Can I find a person or location from a MAC address?
Why is the vendor unknown?
Can I look up many MAC addresses at once?
Is it safe to generate a random MAC?
Are the addresses I enter uploaded?
Keep going
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