Wearsafe Labs Inc

Any device whose MAC address begins with 40:54:E4 has a network interface built by Wearsafe Labs 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

40:54:E4

Organization

Wearsafe Labs Inc

Address

1429 Park Street Hartford CT US 06106

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.