What this means
The IEEE assigned the MA-L block 00803F to TATUNG COMPANY. 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 00:80:3F, it is TATUNG COMPANY hardware.
Frequently Asked Questions
Who owns MAC prefix 00803F?
00803F is registered to TATUNG COMPANY 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. TATUNG COMPANY's block covers 16,777,216 addresses.
What devices use 00803F?
Any network device with a MAC address starting 00:80:3F was manufactured by or for TATUNG COMPANY.