Sigpro

Any device whose MAC address begins with 00:16:04 has a network interface built by Sigpro. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:16:04

Organization

Sigpro

Address

655 W Evelyn ST Mountain View CA US 94041

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.