What this means
The IEEE assigned the MA-L block 00300B to mPHASE 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 00:30:0B, it is mPHASE Technologies, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00300B?
00300B is registered to mPHASE 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. mPHASE Technologies, Inc.'s block covers 16,777,216 addresses.
What devices use 00300B?
Any network device with a MAC address starting 00:30:0B was manufactured by or for mPHASE Technologies, Inc..