POSBRO

Any device whose MAC address begins with 00:1F:9B has a network interface built by POSBRO. 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:9B

Organization

POSBRO

Address

ShinyoungGtower 6F, 271-1 Seongnam-si Kyunggi-do KR 463-824

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.