What this means
The IEEE assigned the MA-L block 201C3A 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 20:1C:3A, it is Nintendo Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 201C3A?
201C3A 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 201C3A?
Any network device with a MAC address starting 20:1C:3A was manufactured by or for Nintendo Co.,Ltd.