What this means
The IEEE assigned the MA-L block 00158F to NTT Advanced Technology Corporation. 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 00:15:8F, it is NTT Advanced Technology Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 00158F?
00158F is registered to NTT Advanced Technology Corporation 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. NTT Advanced Technology Corporation's block covers 16,777,216 addresses.
What devices use 00158F?
Any network device with a MAC address starting 00:15:8F was manufactured by or for NTT Advanced Technology Corporation.