What this means
The IEEE assigned the MA-L block A45E5A to ACTIVIO 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 A4:5E:5A, it is ACTIVIO Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix A45E5A?
A45E5A is registered to ACTIVIO 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. ACTIVIO Inc.'s block covers 16,777,216 addresses.
What devices use A45E5A?
Any network device with a MAC address starting A4:5E:5A was manufactured by or for ACTIVIO Inc..