MAC Address Lookup

Paste one or many MAC addresses and see the vendor, address type and formats.

Private by design

Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.

MAC Address Lookup

Vendor, type and formats for MAC addresses

MAC addresses (one per line)

Vendors

The result appears here.

Options

Output format

Capital letters

The first three bytes of a MAC address (the OUI) are assigned to a manufacturer by the IEEE. Smaller blocks use 28 or 36 bits. This tool matches your address against a saved copy of that public list and shows if the address is unicast or multicast and universal or locally administered.

Paste just the first six characters if that is all you have.
A second hex digit of 2, 6, A or E means a locally administered address, often a random one.
The vendor is who made the network chip, not necessarily the device brand.

Data: public IEEE Registration Authority MA-L, MA-M and MA-S listings downloaded 2026-11-06 and stored as a static file (names and prefixes only; see NOTICE in the tool folder). Longest prefix wins. Address bits per IEEE 802: bit 0 of the first byte is the group (multicast) bit and bit 1 is the local bit. Lookup runs in your browser; nothing is sent anywhere.

Preparing tool

How to use MAC Address Lookup

Paste MAC addresses or just the first six characters, one per line.
Choose the output format and letter case.
Read the vendor and type, then copy or download the list.

Read the detailed guide →

What are the limits of MAC Address Lookup?

Uses a copy of the IEEE public listing saved on this site (see NOTICE), so very new assignments may be missing. Phones often use random private addresses that have no vendor. A vendor name does not prove who owns a device. Your data stays on your device.