Who owns MAC prefix 70B3D5319?

70B3D5319 is registered to ISO/TC 22/SC 31 in the IEEE MA-S registry.

What devices use 70B3D5319?

Any network device with a MAC address starting 70:B3:D5:31:9 was manufactured by or for ISO/TC 22/SC 31.

MA-S · OUI prefix

ISO/TC 22/SC 31

Any MAC address starting 70:B3:D5:31:9 is registered to ISO/TC 22/SC 31 in DE.

OUI prefix	70B3D5319
Vendor	ISO/TC 22/SC 31
Registry	MA-S (36-bit, small block)
Country	DE
Example MAC	70:B3:D5:31:9:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5319 to ISO/TC 22/SC 31. 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:D5:31:9, it is ISO/TC 22/SC 31 hardware.

Look up another MAC