What this means
The IEEE assigned the MA-L block 84A9EA to Career Technologies USA. 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 84:A9:EA, it is Career Technologies USA hardware.
Frequently Asked Questions
Who owns MAC prefix 84A9EA?
84A9EA is registered to Career Technologies USA 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. Career Technologies USA's block covers 16,777,216 addresses.
What devices use 84A9EA?
Any network device with a MAC address starting 84:A9:EA was manufactured by or for Career Technologies USA.