What this means
The IEEE assigned the MA-L block 28ED58 to JAG Jakob AG. 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 28:ED:58, it is JAG Jakob AG hardware.
Frequently Asked Questions
Who owns MAC prefix 28ED58?
28ED58 is registered to JAG Jakob AG 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. JAG Jakob AG's block covers 16,777,216 addresses.
What devices use 28ED58?
Any network device with a MAC address starting 28:ED:58 was manufactured by or for JAG Jakob AG.