What this means
The IEEE assigned the MA-L block 00DD25 to Shenzhen hechengdong 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 00:DD:25, it is Shenzhen hechengdong Technology Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 00DD25?
00DD25 is registered to Shenzhen hechengdong 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. Shenzhen hechengdong Technology Co., Ltd's block covers 16,777,216 addresses.
What devices use 00DD25?
Any network device with a MAC address starting 00:DD:25 was manufactured by or for Shenzhen hechengdong Technology Co., Ltd.