What this means
The IEEE assigned the MA-L block 389F77 to Suzhou Retronic Interconnect Technologies 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 38:9F:77, it is Suzhou Retronic Interconnect Technologies Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 389F77?
389F77 is registered to Suzhou Retronic Interconnect Technologies 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. Suzhou Retronic Interconnect Technologies Co.,Ltd's block covers 16,777,216 addresses.
What devices use 389F77?
Any network device with a MAC address starting 38:9F:77 was manufactured by or for Suzhou Retronic Interconnect Technologies Co.,Ltd.