Measurement Computing Corp

Any device whose MAC address begins with 00:12:71 has a network interface built by Measurement Computing Corp. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:12:71

Organization

Measurement Computing Corp

Address

10 Commerce Way Norton MA US 02766

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.