What this means
The IEEE assigned the MA-L block 00047E to TKH Security B.V.. 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 00:04:7E, it is TKH Security B.V. hardware.
Frequently Asked Questions
Who owns MAC prefix 00047E?
00047E is registered to TKH Security B.V. 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. TKH Security B.V.'s block covers 16,777,216 addresses.
What devices use 00047E?
Any network device with a MAC address starting 00:04:7E was manufactured by or for TKH Security B.V..