What this means
The IEEE assigned the MA-L block 901900 to SCS SA. 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 90:19:00, it is SCS SA hardware.
Frequently Asked Questions
Who owns MAC prefix 901900?
901900 is registered to SCS SA 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. SCS SA's block covers 16,777,216 addresses.
What devices use 901900?
Any network device with a MAC address starting 90:19:00 was manufactured by or for SCS SA.