Mettle Networks Inc.

Any device whose MAC address begins with 40:7B:1B has a network interface built by Mettle Networks 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

40:7B:1B

Organization

Mettle Networks Inc.

Address

111 N. Market St STE 300 San Jose CA US 95113

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.