Pacific Broadband Communications

Any device whose MAC address begins with 00:03:04 has a network interface built by Pacific Broadband Communications. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:03:04

Organization

Pacific Broadband Communications

Address

3103 North First St. San Jose CA US 95134

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.