What this means
The IEEE assigned the MA-L block 4CADDF to Công ty Cổ phần Thiết bị Công nghiệp GEIC. 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:AD:DF, it is Công ty Cổ phần Thiết bị Công nghiệp GEIC hardware.
Frequently Asked Questions
Who owns MAC prefix 4CADDF?
4CADDF is registered to Công ty Cổ phần Thiết bị Công nghiệp GEIC 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. Công ty Cổ phần Thiết bị Công nghiệp GEIC's block covers 16,777,216 addresses.
What devices use 4CADDF?
Any network device with a MAC address starting 4C:AD:DF was manufactured by or for Công ty Cổ phần Thiết bị Công nghiệp GEIC.