What this means
The IEEE assigned the MA-L block 581F67 to Open-m technology limited. 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 58:1F:67, it is Open-m technology limited hardware.
Frequently Asked Questions
Who owns MAC prefix 581F67?
581F67 is registered to Open-m technology limited 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. Open-m technology limited's block covers 16,777,216 addresses.
What devices use 581F67?
Any network device with a MAC address starting 58:1F:67 was manufactured by or for Open-m technology limited.