What this means
The IEEE assigned the MA-L block 40F4FD to UNION MAN TECHNOLOGY 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 40:F4:FD, it is UNION MAN TECHNOLOGY CO.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 40F4FD?
40F4FD is registered to UNION MAN TECHNOLOGY 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. UNION MAN TECHNOLOGY CO.,LTD's block covers 16,777,216 addresses.
What devices use 40F4FD?
Any network device with a MAC address starting 40:F4:FD was manufactured by or for UNION MAN TECHNOLOGY CO.,LTD.