What this means
The IEEE assigned the MA-L block 40D28A to Nintendo 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 40:D2:8A, it is Nintendo Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 40D28A?
40D28A is registered to Nintendo 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. Nintendo Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 40D28A?
Any network device with a MAC address starting 40:D2:8A was manufactured by or for Nintendo Co., Ltd..