Pi-Coral

Any device whose MAC address begins with 28:E4:76 has a network interface built by Pi-Coral. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:E4:76

Organization

Pi-Coral

Address

2130 Gold Street, Ste. 200 San Jose CA - California US 95002

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.