What this means
The IEEE assigned the MA-L block 780F77 to HangZhou Gubei Electronics 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 78:0F:77, it is HangZhou Gubei Electronics Technology Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 780F77?
780F77 is registered to HangZhou Gubei Electronics 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. HangZhou Gubei Electronics Technology Co.,Ltd's block covers 16,777,216 addresses.
What devices use 780F77?
Any network device with a MAC address starting 78:0F:77 was manufactured by or for HangZhou Gubei Electronics Technology Co.,Ltd.