What this means
The IEEE assigned the MA-L block A4D990 to Samsung Electronics 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 A4:D9:90, it is Samsung Electronics Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix A4D990?
A4D990 is registered to Samsung Electronics 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. Samsung Electronics Co.,Ltd's block covers 16,777,216 addresses.
What devices use A4D990?
Any network device with a MAC address starting A4:D9:90 was manufactured by or for Samsung Electronics Co.,Ltd.