What this means
The IEEE assigned the MA-L block 00190D to IEEE 1394c. 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 00:19:0D, it is IEEE 1394c hardware.
Frequently Asked Questions
Who owns MAC prefix 00190D?
00190D is registered to IEEE 1394c 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. IEEE 1394c's block covers 16,777,216 addresses.
What devices use 00190D?
Any network device with a MAC address starting 00:19:0D was manufactured by or for IEEE 1394c.