Espressif Inc.
Any device whose MAC address begins with 34:B4:72 has a network interface built by Espressif 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
- 34:B4:72
- Organization
- Espressif Inc.
- Address
- Room 204, Building 2, 690 Bibo Rd, Pudong New Area Shanghai Shanghai CN 201203
- 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.