What this means
The IEEE assigned the MA-L block 005021 to EIS INTERNATIONAL, 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 00:50:21, it is EIS INTERNATIONAL, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 005021?
005021 is registered to EIS INTERNATIONAL, 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. EIS INTERNATIONAL, INC.'s block covers 16,777,216 addresses.
What devices use 005021?
Any network device with a MAC address starting 00:50:21 was manufactured by or for EIS INTERNATIONAL, INC..