What this means
The IEEE assigned the MA-L block A4CD23 to Shenzhenshi Xinzhongxin 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 A4:CD:23, it is Shenzhenshi Xinzhongxin Co., Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix A4CD23?
A4CD23 is registered to Shenzhenshi Xinzhongxin 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. Shenzhenshi Xinzhongxin Co., Ltd's block covers 16,777,216 addresses.
What devices use A4CD23?
Any network device with a MAC address starting A4:CD:23 was manufactured by or for Shenzhenshi Xinzhongxin Co., Ltd.