Amphenol

Any device whose MAC address begins with 78:A7:14 has a network interface built by Amphenol. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

78:A7:14

Organization

Amphenol

Address

20 Valley St. Endicott New York US 13760

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.