Vivalnk

Any device whose MAC address begins with B4:E7:82 has a network interface built by Vivalnk. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

B4:E7:82

Organization

Vivalnk

Address

4655 Old Ironsides Dr, #390 Santa Clara CA US 95054

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.