MAC Address LookupBrowser-local network tool
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MAC address vendor lookup and format converter

Paste one MAC or a whole list. See the manufacturer, whether it is a randomised (locally administered) or multicast address, and copy it in the format your switch, OS or DHCP server expects.

Vendor

Looking up…

OUI F0-18-98

UnicastGlobally unique (OUI)
f0:18:98:4a:2b:1c

All formats

Linux / macOS
f0:18:98:4a:2b:1c
Windows
F0-18-98-4A-2B-1C
Cisco
f018.984a.2b1c
Plain
f018984a2b1c
EUI-64
f218:98ff:fe4a:2b1c
IPv6 link-local
fe80::f218:98ff:fe4a:2b1c

Vendor data: IEEE MA-L / MA-M / MA-S registry (via the Wireshark manuf file), loaded into your browser on first lookup.

Common tasks

  • mac address lookup
  • mac vendor lookup
  • oui lookup
  • mac address format converter
  • mac 地址查询

Quick answer

Paste a MAC such as F0:18:98:4A:2B:1C to see the vendor (Apple), that it is a globally unique unicast address, and copy it as f018.984a.2b1c for Cisco or F0-18-98-4A-2B-1C for Windows.

How to use

  1. 1. Paste addressesAny notation works: 00:1a:2b…, 00-1A-2B…, 001a.2b3c.4d5e.
  2. 2. Pick a formatChoose the target notation and case.
  3. 3. CopyCopy one value or the whole converted list.

Common use cases

  • Identify unknown devices in a DHCP lease or ARP table
  • Convert MACs for Cisco switch commands
  • Spot randomised phone MAC addresses
  • Build EUI-64 IPv6 addresses

Features

  • Vendor lookup from the IEEE MA-L, MA-M and MA-S registries
  • Colon, hyphen, Cisco dot and plain formats, upper or lower case
  • Unicast / multicast and global / locally administered bits
  • Modified EUI-64 and IPv6 link-local address
  • Batch convert up to 2,000 addresses
  • Random locally administered MAC generator

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Frequently asked questions

Why does my phone's MAC show no vendor?
Phones use a random, locally administered MAC per Wi-Fi network for privacy. The second hex digit is 2, 6, A or E, and no vendor is registered.
Is the lookup done online?
The vendor list is downloaded once into your browser and matched locally; the addresses you paste are not sent anywhere.
Which format does Cisco use?
Three dot-separated groups of four lowercase hex digits, e.g. 001a.2b3c.4d5e.