What this means
The IEEE assigned the MA-L block 209771 to GSD VIET NAM TECHNOLOGY COMPANY LIMITED. 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 20:97:71, it is GSD VIET NAM TECHNOLOGY COMPANY LIMITED hardware.
Frequently Asked Questions
Who owns MAC prefix 209771?
209771 is registered to GSD VIET NAM TECHNOLOGY COMPANY LIMITED 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. GSD VIET NAM TECHNOLOGY COMPANY LIMITED's block covers 16,777,216 addresses.
What devices use 209771?
Any network device with a MAC address starting 20:97:71 was manufactured by or for GSD VIET NAM TECHNOLOGY COMPANY LIMITED.