Who owns MAC prefix 70B3D5A17?

70B3D5A17 is registered to Tunstall A/S in the IEEE MA-S registry.

What devices use 70B3D5A17?

Any network device with a MAC address starting 70:B3:D5:A1:7 was manufactured by or for Tunstall A/S.

MA-S · OUI prefix

Tunstall A/S

Any MAC address starting 70:B3:D5:A1:7 is registered to Tunstall A/S in DK.

OUI prefix	70B3D5A17
Vendor	Tunstall A/S
Registry	MA-S (36-bit, small block)
Country	DK
Example MAC	70:B3:D5:A1:7:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5A17 to Tunstall 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:A1:7, it is Tunstall A/S hardware.

Other Tunstall A/S prefixes

Tunstall A/S holds 5 registered blocks in total.

70B3D5139 70B3D52F8 8C1F64C59 8C1F64F2C

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