MAC Address Lookup
Identify the manufacturer of any device from its MAC address. Powered by the IEEE OUI database with 39,000+ registered vendors including Cisco, Apple, Samsung, TP-Link, Huawei, Xiaomi, Hikvision and Ubiquiti.
Paste a MAC address in any format (00:1A:2B:3C:4D:5E, 00-1A-2B-3C-4D-5E, 001A2B3C4D5E). We match the first three bytes (the OUI) against the IEEE registry to find the manufacturer.
What is a MAC address?
A MAC (Media Access Control) address is a 48-bit identifier burned into every network interface. The first three bytes — the OUI — identify the manufacturer; the last three are unique to the device. Modern phones and laptops also generate randomized MACs for privacy when scanning Wi-Fi networks, and those will not match a real vendor.
Common use cases
- 1Identify an unknown device on your Wi-Fi — paste the MAC from your router's DHCP client list and instantly see whether it is an Apple iPhone, Samsung TV, Xiaomi vacuum or random IoT vendor.
- 2Audit a corporate network — match every MAC in the ARP table to a vendor (Cisco, HP, Dell, Lenovo, Aruba, Ubiquiti) to spot rogue hardware that does not belong on the LAN.
- 3Track down the make of a router from a sticker — the small print on the bottom of a TP-Link, Huawei or ZTE modem usually shows the MAC; the OUI prefix confirms the manufacturer.
Frequently asked questions
What is an OUI?+
An Organizationally Unique Identifier is the first 24 bits (3 bytes) of a MAC address. The IEEE assigns each block to a single vendor — that is how we map 3C:5A:B4 to Google, 00:1A:2B to Ayecom, and so on.
Why does my MAC come back as "unknown"?+
Modern phones randomise their Wi-Fi MAC for privacy. Random MACs have the locally-administered bit set (the second hex digit is 2, 6, A or E) and never match a real vendor.
Is the database real?+
Yes — we use the official IEEE OUI registry with 39,000+ assigned vendor blocks. The list updates whenever IEEE publishes new allocations.