What this means
The IEEE assigned the MA-L block D40E60 to Nanjing phx-gctech Information 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 D4:0E:60, it is Nanjing phx-gctech Information Technology Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix D40E60?
D40E60 is registered to Nanjing phx-gctech Information 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. Nanjing phx-gctech Information Technology Co., Ltd's block covers 16,777,216 addresses.
What devices use D40E60?
Any network device with a MAC address starting D4:0E:60 was manufactured by or for Nanjing phx-gctech Information Technology Co., Ltd.