What this means
The IEEE assigned the MA-L block B40AD8 to Sony Interactive Entertainment Inc.. 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 B4:0A:D8, it is Sony Interactive Entertainment Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix B40AD8?
B40AD8 is registered to Sony Interactive Entertainment Inc. 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. Sony Interactive Entertainment Inc.'s block covers 16,777,216 addresses.
What devices use B40AD8?
Any network device with a MAC address starting B4:0A:D8 was manufactured by or for Sony Interactive Entertainment Inc..