Cofractal, Inc.
Any device whose MAC address begins with E4:DC:5F has a network interface built by Cofractal, 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
- E4:DC:5F
- Organization
- Cofractal, Inc.
- Address
- 209 E Java Dr. #61593 Sunnyvale CA US 94089
- 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.