Who owns MAC prefix 5CB15F?

5CB15F is registered to Oceanblue Cloud Technology Limited in the IEEE MA-L registry.

What devices use 5CB15F?

Any network device with a MAC address starting 5C:B1:5F was manufactured by or for Oceanblue Cloud Technology Limited.

MA-L · OUI prefix

Oceanblue Cloud Technology Limited

Any MAC address starting 5C:B1:5F is registered to Oceanblue Cloud Technology Limited in HK.

OUI prefix	5CB15F
Vendor	Oceanblue Cloud Technology Limited
Registry	MA-L (24-bit, large block)
Country	HK
Example MAC	5C:B1:5F:00:00:00

What this means

The IEEE assigned the MA-L block 5CB15F to Oceanblue Cloud Technology 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 5C:B1:5F, it is Oceanblue Cloud Technology Limited hardware.

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