What this means
The IEEE assigned the MA-L block 00151B to Isilon Systems 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 00:15:1B, it is Isilon Systems Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00151B?
00151B is registered to Isilon Systems 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. Isilon Systems Inc.'s block covers 16,777,216 addresses.
What devices use 00151B?
Any network device with a MAC address starting 00:15:1B was manufactured by or for Isilon Systems Inc..