What this means
The IEEE assigned the MA-L block 3C8C40 to Hangzhou H3C Technologies Co., Limited. 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 3C:8C:40, it is Hangzhou H3C Technologies Co., Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 3C8C40?
3C8C40 is registered to Hangzhou H3C Technologies Co., Limited 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. Hangzhou H3C Technologies Co., Limited's block covers 16,777,216 addresses.
What devices use 3C8C40?
Any network device with a MAC address starting 3C:8C:40 was manufactured by or for Hangzhou H3C Technologies Co., Limited.