What this means
The IEEE assigned the MA-L block 00904F to ABB POWER T&D COMPANY, 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 00:90:4F, it is ABB POWER T&D COMPANY, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 00904F?
00904F is registered to ABB POWER T&D COMPANY, 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. ABB POWER T&D COMPANY, INC.'s block covers 16,777,216 addresses.
What devices use 00904F?
Any network device with a MAC address starting 00:90:4F was manufactured by or for ABB POWER T&D COMPANY, INC..