HMS Industrial Networks

Any device whose MAC address begins with 00:30:11 has a network interface built by HMS Industrial Networks. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:30:11

Organization

HMS Industrial Networks

Address

P O Box 4126 SE SE-300 04

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.