Chip2Chip

Any device whose MAC address begins with 00:03:F5 has a network interface built by Chip2Chip. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:03:F5

Organization

Chip2Chip

Address

2249 Zanker Rd. San Jose CA US 95131

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.