What this means
The IEEE assigned the MA-L block 4C3909 to HPL Electric & Power Private Limited. 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:39:09, it is HPL Electric & Power Private Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 4C3909?
4C3909 is registered to HPL Electric & Power Private Limited 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. HPL Electric & Power Private Limited's block covers 16,777,216 addresses.
What devices use 4C3909?
Any network device with a MAC address starting 4C:39:09 was manufactured by or for HPL Electric & Power Private Limited.