Who owns MAC prefix 70B3D5931?

70B3D5931 is registered to MARINE INSTRUMENTS, S.A. in the IEEE MA-S registry.

What devices use 70B3D5931?

Any network device with a MAC address starting 70:B3:D5:93:1 was manufactured by or for MARINE INSTRUMENTS, S.A..

MA-S · OUI prefix

MARINE INSTRUMENTS, S.A.

Any MAC address starting 70:B3:D5:93:1 is registered to MARINE INSTRUMENTS, S.A. in ES.

OUI prefix	70B3D5931
Vendor	MARINE INSTRUMENTS, S.A.
Registry	MA-S (36-bit, small block)
Country	ES
Example MAC	70:B3:D5:93:1:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5931 to MARINE INSTRUMENTS, S.A.. 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:D5:93:1, it is MARINE INSTRUMENTS, S.A. hardware.

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