What this means
The IEEE assigned the MA-L block 00E0C0 to SEIWA ELECTRIC MFG. 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 00:E0:C0, it is SEIWA ELECTRIC MFG. CO., LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 00E0C0?
00E0C0 is registered to SEIWA ELECTRIC MFG. 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. SEIWA ELECTRIC MFG. CO., LTD.'s block covers 16,777,216 addresses.
What devices use 00E0C0?
Any network device with a MAC address starting 00:E0:C0 was manufactured by or for SEIWA ELECTRIC MFG. CO., LTD..