What this means
The IEEE assigned the MA-L block 304F75 to Zhone Technologies, 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 30:4F:75, it is Zhone Technologies, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 304F75?
304F75 is registered to Zhone Technologies, 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. Zhone Technologies, Inc.'s block covers 16,777,216 addresses.
What devices use 304F75?
Any network device with a MAC address starting 30:4F:75 was manufactured by or for Zhone Technologies, Inc..