Firefly Integrations

Any device whose MAC address begins with 38:09:A4 has a network interface built by Firefly Integrations. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

38:09:A4

Organization

Firefly Integrations

Address

1013 Elroy Dr Middlebury IN US 46540

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.