What this means
The IEEE assigned the MA-L block 4CD7B6 to Helmer Scientific. 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 4C:D7:B6, it is Helmer Scientific hardware.
Frequently Asked Questions
Who owns MAC prefix 4CD7B6?
4CD7B6 is registered to Helmer Scientific 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. Helmer Scientific's block covers 16,777,216 addresses.
What devices use 4CD7B6?
Any network device with a MAC address starting 4C:D7:B6 was manufactured by or for Helmer Scientific.