Tuya Smart Inc.
Any device whose MAC address begins with 1C:90:FF has a network interface built by Tuya Smart 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
- 1C:90:FF
- Organization
- Tuya Smart Inc.
- Address
- 160 Greentree Drive, Suite 101 Dover DE US 19904
- 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.