Who owns MAC prefix C477AF?

C477AF is registered to Advanced Digital Broadcast SA in the IEEE MA-L registry.

What devices use C477AF?

Any network device with a MAC address starting C4:77:AF was manufactured by or for Advanced Digital Broadcast SA.

MA-L · OUI prefix

Advanced Digital Broadcast SA

Any MAC address starting C4:77:AF is registered to Advanced Digital Broadcast SA in CH.

OUI prefix	C477AF
Vendor	Advanced Digital Broadcast SA
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	C4:77:AF:00:00:00

What this means

The IEEE assigned the MA-L block C477AF to Advanced Digital Broadcast SA. 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 C4:77:AF, it is Advanced Digital Broadcast SA hardware.

Other Advanced Digital Broadcast SA prefixes

Advanced Digital Broadcast SA holds 3 registered blocks in total.

2083F8 686359

Look up another MAC