What this means
The IEEE assigned the MA-L block 0019A0 to NIHON DATA SYSTENS, 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 00:19:A0, it is NIHON DATA SYSTENS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 0019A0?
0019A0 is registered to NIHON DATA SYSTENS, 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 DATA SYSTENS, INC.'s block covers 16,777,216 addresses.
What devices use 0019A0?
Any network device with a MAC address starting 00:19:A0 was manufactured by or for NIHON DATA SYSTENS, INC..