What this means
The IEEE assigned the MA-L block 00900A to PROTON ELECTRONIC INDUSTRIAL CO., LTD.. 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 00:90:0A, it is PROTON ELECTRONIC INDUSTRIAL CO., LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 00900A?
00900A is registered to PROTON ELECTRONIC INDUSTRIAL CO., LTD. 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. PROTON ELECTRONIC INDUSTRIAL CO., LTD.'s block covers 16,777,216 addresses.
What devices use 00900A?
Any network device with a MAC address starting 00:90:0A was manufactured by or for PROTON ELECTRONIC INDUSTRIAL CO., LTD..