Who owns MAC prefix 2877B1?

2877B1 is registered to Tri plus grupa d.o.o. in the IEEE MA-L registry.

What devices use 2877B1?

Any network device with a MAC address starting 28:77:B1 was manufactured by or for Tri plus grupa d.o.o..

MA-L · OUI prefix

Tri plus grupa d.o.o.

Any MAC address starting 28:77:B1 is registered to Tri plus grupa d.o.o. in HR.

OUI prefix	2877B1
Vendor	Tri plus grupa d.o.o.
Registry	MA-L (24-bit, large block)
Country	HR
Example MAC	28:77:B1:00:00:00

What this means

The IEEE assigned the MA-L block 2877B1 to Tri plus grupa d.o.o.. 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 28:77:B1, it is Tri plus grupa d.o.o. hardware.

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