What this means
The IEEE assigned the MA-L block 00091A to Macat Optics & Electronics Co., Ltd.. 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 00:09:1A, it is Macat Optics & Electronics Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 00091A?
00091A is registered to Macat Optics & Electronics Co., Ltd. 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. Macat Optics & Electronics Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 00091A?
Any network device with a MAC address starting 00:09:1A was manufactured by or for Macat Optics & Electronics Co., Ltd..