What this means
The IEEE assigned the MA-L block ACD657 to Shaanxi GuoLian Digital TV 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 AC:D6:57, it is Shaanxi GuoLian Digital TV Technology Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix ACD657?
ACD657 is registered to Shaanxi GuoLian Digital TV 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. Shaanxi GuoLian Digital TV Technology Co.,Ltd.'s block covers 16,777,216 addresses.
What devices use ACD657?
Any network device with a MAC address starting AC:D6:57 was manufactured by or for Shaanxi GuoLian Digital TV Technology Co.,Ltd..