Jastec

Any device whose MAC address begins with 00:1F:09 has a network interface built by Jastec. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:1F:09

Organization

Jastec

Address

Jastec B/D 2F, 92-7 Kumgok-dong, Boondang-gu, KR 463-804

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.