What this means
The IEEE assigned the MA-L block 00301F to OPTICAL NETWORKS, 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 00:30:1F, it is OPTICAL NETWORKS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 00301F?
00301F is registered to OPTICAL NETWORKS, 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. OPTICAL NETWORKS, INC.'s block covers 16,777,216 addresses.
What devices use 00301F?
Any network device with a MAC address starting 00:30:1F was manufactured by or for OPTICAL NETWORKS, INC..