What this means
The IEEE assigned the MA-L block D8B020 to Taicang T&W Electronics. 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 D8:B0:20, it is Taicang T&W Electronics hardware.
Frequently Asked Questions
Who owns MAC prefix D8B020?
D8B020 is registered to Taicang T&W Electronics 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. Taicang T&W Electronics's block covers 16,777,216 addresses.
What devices use D8B020?
Any network device with a MAC address starting D8:B0:20 was manufactured by or for Taicang T&W Electronics.