DreamBig Semiconductor, Inc.
Any device whose MAC address begins with A4:5F:B9 has a network interface built by DreamBig Semiconductor, 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
- A4:5F:B9
- Organization
- DreamBig Semiconductor, Inc.
- Address
- 2860 Zanker Road, Suite 210 San Jose CA US 95134
- 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.