What this means
The IEEE assigned the MA-L block 905C34 to Sirius Electronic Systems Srl. 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 90:5C:34, it is Sirius Electronic Systems Srl hardware.
Frequently Asked Questions
Who owns MAC prefix 905C34?
905C34 is registered to Sirius Electronic Systems Srl 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. Sirius Electronic Systems Srl's block covers 16,777,216 addresses.
What devices use 905C34?
Any network device with a MAC address starting 90:5C:34 was manufactured by or for Sirius Electronic Systems Srl.