Who owns MAC prefix 8C1F64864?

8C1F64864 is registered to IMI Thomson Valves in the IEEE MA-S registry.

What devices use 8C1F64864?

Any network device with a MAC address starting 8C:1F:64:86:4 was manufactured by or for IMI Thomson Valves.

MA-S · OUI prefix

IMI Thomson Valves

Any MAC address starting 8C:1F:64:86:4 is registered to IMI Thomson Valves.

OUI prefix	8C1F64864
Vendor	IMI Thomson Valves
Registry	MA-S (36-bit, small block)
Example MAC	8C:1F:64:86:4:00:00:00

What this means

The IEEE assigned the MA-S block 8C1F64864 to IMI Thomson Valves. 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 8C:1F:64:86:4, it is IMI Thomson Valves hardware.

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