What this means
The IEEE assigned the MA-L block 587A4D to Stonesoft Corporation. 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 58:7A:4D, it is Stonesoft Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 587A4D?
587A4D is registered to Stonesoft Corporation 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. Stonesoft Corporation's block covers 16,777,216 addresses.
What devices use 587A4D?
Any network device with a MAC address starting 58:7A:4D was manufactured by or for Stonesoft Corporation.