VMware MAC Address Prefixes

VMware assigns MACs to virtual machines on ESXi and Workstation. A VMware OUI means a virtual NIC, not physical hardware.

IEEE blocks
4
Registry names
VMware, Inc.
MA-L (24-bit OUI)
4
Got a specific address? Look it up in the MAC address lookup →

What to know about VMware MACs

  • 00:50:56 is used for MACs assigned by vCenter or set manually; 00:0C:29 is used for MACs auto-generated by an ESXi host.
  • Duplicate MACs can appear when VMs are cloned outside vCenter; check this if two VMs fight over an IP.

All registered blocks

From the IEEE registry via the oui-data package (a mirror of the IEEE listings) (MA-L, MA-M, MA-S), built 2026-11-01.

MA-L (24-bit OUI): 4 blocks
  • 00:05:69
  • 00:0C:29
  • 00:1C:14
  • 00:50:56

Other vendors

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Related: MAC address lookup · MAC to IPv6 (EUI-64) · all vendors