Alphatron Marine BV

Any device whose MAC address begins with 64:81:25 has a network interface built by Alphatron Marine BV. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

64:81:25

Organization

Alphatron Marine BV

Address

Schaardijk 23 Rotterdam Zuid-Holland NL 3063NH

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.