WB Electronics Sp. z o.o.

Any device whose MAC address begins with 00:19:04 has a network interface built by WB Electronics Sp. z o.o.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:19:04

Organization

WB Electronics Sp. z o.o.

Address

ul. Poznanska 129/133 Ozarow Mazowiecki Mazowieckie PL 05-850

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.