What this means
The IEEE assigned the MA-L block 00E04D to INTERNET INITIATIVE JAPAN, 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:E0:4D, it is INTERNET INITIATIVE JAPAN, INC hardware.
Frequently Asked Questions
Who owns MAC prefix 00E04D?
00E04D is registered to INTERNET INITIATIVE JAPAN, 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. INTERNET INITIATIVE JAPAN, INC's block covers 16,777,216 addresses.
What devices use 00E04D?
Any network device with a MAC address starting 00:E0:4D was manufactured by or for INTERNET INITIATIVE JAPAN, INC.