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MAC Address Lookup

OUI Vendor Identification
Tip: Use ip link (Linux), ipconfig /all (Windows), or ifconfig (macOS) to find your MAC address. The first 3 octets (OUI) identify the manufacturer.

MAC Address Format

  • AA:BB:CC:DD:EE:FF - Colon separated
  • AA-BB-CC-DD-EE-FF - Hyphen separated
  • AABB.CCDD.EEFF - Cisco format
  • AABBCCDDEEFF - No separators

Special Addresses

  • FF:FF:FF:FF:FF:FF - Broadcast
  • 01:00:5E:xx:xx:xx - IPv4 Multicast
  • 33:33:xx:xx:xx:xx - IPv6 Multicast
  • x2:xx:xx:xx:xx:xx - Locally administered

Virtual/Hypervisor OUIs

  • 00:50:56 - VMware ESXi
  • 00:0C:29 - VMware VM
  • 00:15:5D - Microsoft Hyper-V
  • 52:54:00 - QEMU/KVM
  • 08:00:27 - VirtualBox

MAC Address Bits

  • Bit 0 - Unicast (0) / Multicast (1)
  • Bit 1 - Global (0) / Local (1)
  • Bits 2-23 - OUI (Vendor ID)
  • Bits 24-47 - NIC Specific