What this means
The IEEE assigned the MA-L block 00093E to C&I Technologies. 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 00:09:3E, it is C&I Technologies hardware.
Frequently Asked Questions
Who owns MAC prefix 00093E?
00093E is registered to C&I Technologies 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. C&I Technologies's block covers 16,777,216 addresses.
What devices use 00093E?
Any network device with a MAC address starting 00:09:3E was manufactured by or for C&I Technologies.