What this means
The IEEE assigned the MA-L block 48E3C3 to JENOPTIK Advanced Systems GmbH. 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 48:E3:C3, it is JENOPTIK Advanced Systems GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 48E3C3?
48E3C3 is registered to JENOPTIK Advanced Systems GmbH 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. JENOPTIK Advanced Systems GmbH's block covers 16,777,216 addresses.
What devices use 48E3C3?
Any network device with a MAC address starting 48:E3:C3 was manufactured by or for JENOPTIK Advanced Systems GmbH.