What this means
The IEEE assigned the MA-L block 84ACFB to Crouzet Automatismes. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 84:AC:FB, it is Crouzet Automatismes hardware.
Frequently Asked Questions
Who owns MAC prefix 84ACFB?
84ACFB is registered to Crouzet Automatismes in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Crouzet Automatismes's block covers 16,777,216 addresses.
What devices use 84ACFB?
Any network device with a MAC address starting 84:AC:FB was manufactured by or for Crouzet Automatismes.