What this means
The IEEE assigned the MA-L block 1CD40C to Kriwan Industrie-Elektronik 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 1C:D4:0C, it is Kriwan Industrie-Elektronik GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 1CD40C?
1CD40C is registered to Kriwan Industrie-Elektronik 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. Kriwan Industrie-Elektronik GmbH's block covers 16,777,216 addresses.
What devices use 1CD40C?
Any network device with a MAC address starting 1C:D4:0C was manufactured by or for Kriwan Industrie-Elektronik GmbH.