Colorado Vnet

Any device whose MAC address begins with 00:16:21 has a network interface built by Colorado Vnet. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:16:21

Organization

Colorado Vnet

Address

255 E. 6th St. Loveland CO US 80537

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.