What this means
The IEEE assigned the MA-L block 00903A to NIHON MEDIA TOOL INC.. 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 00:90:3A, it is NIHON MEDIA TOOL INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 00903A?
00903A is registered to NIHON MEDIA TOOL INC. 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. NIHON MEDIA TOOL INC.'s block covers 16,777,216 addresses.
What devices use 00903A?
Any network device with a MAC address starting 00:90:3A was manufactured by or for NIHON MEDIA TOOL INC..