What this means
The IEEE assigned the MA-L block D05BCB to Tianyi Telecom Terminals Company 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 D0:5B:CB, it is Tianyi Telecom Terminals Company Limited hardware.
Frequently Asked Questions
Who owns MAC prefix D05BCB?
D05BCB is registered to Tianyi Telecom Terminals Company 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. Tianyi Telecom Terminals Company Limited's block covers 16,777,216 addresses.
What devices use D05BCB?
Any network device with a MAC address starting D0:5B:CB was manufactured by or for Tianyi Telecom Terminals Company Limited.