TMT

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

OUI prefix

00:09:00

Organization

TMT

Address

11 Kiryat Mada, POB 45199 Jerusalem IL 91450

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.