SQUARE D COMPANY

Any device whose MAC address begins with 00:80:67 has a network interface built by SQUARE D COMPANY. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:80:67

Organization

SQUARE D COMPANY

Address

4041 NORTH RICHARD STREET MILWAUKEE WI US 53201

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.