What this means
The IEEE assigned the MA-L block 804005 to Guangdong COROS Sports 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 80:40:05, it is Guangdong COROS Sports Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 804005?
804005 is registered to Guangdong COROS Sports 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. Guangdong COROS Sports Technology Co.,Ltd's block covers 16,777,216 addresses.
What devices use 804005?
Any network device with a MAC address starting 80:40:05 was manufactured by or for Guangdong COROS Sports Technology Co.,Ltd.