Nanometrics Inc.

Any device whose MAC address begins with 00:11:40 has a network interface built by Nanometrics Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:11:40

Organization

Nanometrics Inc.

Address

250 Herzberg Rd. Kanata Ontario CA K2K 2A1

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.