Who owns MAC prefix 70B3D51D6?

70B3D51D6 is registered to MacGray Services in the IEEE MA-S registry.

What devices use 70B3D51D6?

Any network device with a MAC address starting 70:B3:D5:1D:6 was manufactured by or for MacGray Services.

MA-S · OUI prefix

MacGray Services

Any MAC address starting 70:B3:D5:1D:6 is registered to MacGray Services in MA.

OUI prefix	70B3D51D6
Vendor	MacGray Services
Registry	MA-S (36-bit, small block)
Country	MA
Example MAC	70:B3:D5:1D:6:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D51D6 to MacGray Services. 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:D5:1D:6, it is MacGray Services hardware.

Other MacGray Services prefixes

MacGray Services holds 2 registered blocks in total.

70B3D5F34

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