I-BUS

Any device whose MAC address begins with 00:90:90 has a network interface built by I-BUS. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:90:90

Organization

I-BUS

Address

9174 SKY PARK COURT SAN DIEGO CA US 92123

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.