Telecom FM

Any device whose MAC address begins with 00:25:B6 has a network interface built by Telecom FM. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:25:B6

Organization

Telecom FM

Address

895 Plymouth Road Slough Berkshire GB SL1 4LP

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.