What this means
The IEEE assigned the MA-L block C400AD to Advantech Technology (CHINA) Co., Ltd.. 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 C4:00:AD, it is Advantech Technology (CHINA) Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix C400AD?
C400AD is registered to Advantech Technology (CHINA) Co., Ltd. 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. Advantech Technology (CHINA) Co., Ltd.'s block covers 16,777,216 addresses.
What devices use C400AD?
Any network device with a MAC address starting C4:00:AD was manufactured by or for Advantech Technology (CHINA) Co., Ltd..