What this means
The IEEE assigned the MA-L block 587803 to Unitek A/S. 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 58:78:03, it is Unitek A/S hardware.
Frequently Asked Questions
Who owns MAC prefix 587803?
587803 is registered to Unitek A/S 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. Unitek A/S's block covers 16,777,216 addresses.
What devices use 587803?
Any network device with a MAC address starting 58:78:03 was manufactured by or for Unitek A/S.