What this means
The IEEE assigned the MA-L block 1C7839 to Shenzhen Tencent Computer System 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 1C:78:39, it is Shenzhen Tencent Computer System Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 1C7839?
1C7839 is registered to Shenzhen Tencent Computer System 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 Tencent Computer System Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 1C7839?
Any network device with a MAC address starting 1C:78:39 was manufactured by or for Shenzhen Tencent Computer System Co., Ltd..