What this means
The IEEE assigned the MA-L block DCD87F to Shenzhen JoinCyber Telecom Equipment 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 DC:D8:7F, it is Shenzhen JoinCyber Telecom Equipment Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix DCD87F?
DCD87F is registered to Shenzhen JoinCyber Telecom Equipment 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. Shenzhen JoinCyber Telecom Equipment Ltd's block covers 16,777,216 addresses.
What devices use DCD87F?
Any network device with a MAC address starting DC:D8:7F was manufactured by or for Shenzhen JoinCyber Telecom Equipment Ltd.