Who owns MAC prefix 70B3D5FC5?

70B3D5FC5 is registered to Eltwin A/S in the IEEE MA-S registry.

What devices use 70B3D5FC5?

Any network device with a MAC address starting 70:B3:D5:FC:5 was manufactured by or for Eltwin A/S.

MA-S · OUI prefix

Eltwin A/S

Any MAC address starting 70:B3:D5:FC:5 is registered to Eltwin A/S in DK.

OUI prefix	70B3D5FC5
Vendor	Eltwin A/S
Registry	MA-S (36-bit, small block)
Country	DK
Example MAC	70:B3:D5:FC:5:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5FC5 to Eltwin A/S. 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 70:B3:D5:FC:5, it is Eltwin A/S hardware.

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