What this means
The IEEE assigned the MA-L block 001A91 to FusionDynamic 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 00:1A:91, it is FusionDynamic Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 001A91?
001A91 is registered to FusionDynamic 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. FusionDynamic Ltd.'s block covers 16,777,216 addresses.
What devices use 001A91?
Any network device with a MAC address starting 00:1A:91 was manufactured by or for FusionDynamic Ltd..