7signal Solutions, Inc

Any device whose MAC address begins with B8:99:19 has a network interface built by 7signal Solutions, Inc. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

B8:99:19

Organization

7signal Solutions, Inc

Address

526 S. Main Street Akron OH US 44311

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.