What this means
The IEEE assigned the MA-L block 74803F to Renesas Electronics (Penang) Sdn. Bhd.. 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 74:80:3F, it is Renesas Electronics (Penang) Sdn. Bhd. hardware.
Frequently Asked Questions
Who owns MAC prefix 74803F?
74803F is registered to Renesas Electronics (Penang) Sdn. Bhd. 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. Renesas Electronics (Penang) Sdn. Bhd.'s block covers 16,777,216 addresses.
What devices use 74803F?
Any network device with a MAC address starting 74:80:3F was manufactured by or for Renesas Electronics (Penang) Sdn. Bhd..