A5TEK Corp.

Any device whose MAC address begins with 00:06:B9 has a network interface built by A5TEK Corp.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:06:B9

Organization

A5TEK Corp.

Address

1233 Alderwood Ave. Sunnyvale CA US 94089

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.