Resideo

Any device whose MAC address begins with 10:30:89 has a network interface built by Resideo. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

10:30:89

Organization

Resideo

Address

2 Corporate Center Dr. Melville NY US 11747

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.