Who owns MAC prefix 7C4B78?

7C4B78 is registered to Red Sun Synthesis Pte Ltd in the IEEE MA-L registry.

What devices use 7C4B78?

Any network device with a MAC address starting 7C:4B:78 was manufactured by or for Red Sun Synthesis Pte Ltd.

MA-L · OUI prefix

Red Sun Synthesis Pte Ltd

Any MAC address starting 7C:4B:78 is registered to Red Sun Synthesis Pte Ltd in SG.

OUI prefix	7C4B78
Vendor	Red Sun Synthesis Pte Ltd
Registry	MA-L (24-bit, large block)
Country	SG
Example MAC	7C:4B:78:00:00:00

What this means

The IEEE assigned the MA-L block 7C4B78 to Red Sun Synthesis Pte 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 7C:4B:78, it is Red Sun Synthesis Pte Ltd hardware.

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