What this means
The IEEE assigned the MA-L block 78B39F to SERNET (SUZHOU) TECHNOLOGIES CORPORATION. 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 78:B3:9F, it is SERNET (SUZHOU) TECHNOLOGIES CORPORATION hardware.
Frequently Asked Questions
Who owns MAC prefix 78B39F?
78B39F is registered to SERNET (SUZHOU) TECHNOLOGIES CORPORATION 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. SERNET (SUZHOU) TECHNOLOGIES CORPORATION's block covers 16,777,216 addresses.
What devices use 78B39F?
Any network device with a MAC address starting 78:B3:9F was manufactured by or for SERNET (SUZHOU) TECHNOLOGIES CORPORATION.