What this means
The IEEE assigned the MA-L block A497BB to Hitachi Industrial Equipment Systems 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 A4:97:BB, it is Hitachi Industrial Equipment Systems Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix A497BB?
A497BB is registered to Hitachi Industrial Equipment Systems 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. Hitachi Industrial Equipment Systems Co.,Ltd's block covers 16,777,216 addresses.
What devices use A497BB?
Any network device with a MAC address starting A4:97:BB was manufactured by or for Hitachi Industrial Equipment Systems Co.,Ltd.