ATX

Any device whose MAC address begins with 00:13:CA has a network interface built by ATX. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:13:CA

Organization

ATX

Address

8-1602 Tricont Avenue Whitby ON CA L1N 7C3

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.