Precision Electronic Manufacturing

Any device whose MAC address begins with 00:01:B3 has a network interface built by Precision Electronic Manufacturing. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:01:B3

Organization

Precision Electronic Manufacturing

Address

P0187, P.O. 527948 Miami FL US 33152-7948

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.