Who owns MAC prefix 70B3D5444?

70B3D5444 is registered to AMS Controls, Inc. in the IEEE MA-S registry.

What devices use 70B3D5444?

Any network device with a MAC address starting 70:B3:D5:44:4 was manufactured by or for AMS Controls, Inc..

MA-S · OUI prefix

AMS Controls, Inc.

Any MAC address starting 70:B3:D5:44:4 is registered to AMS Controls, Inc. in US.

OUI prefix	70B3D5444
Vendor	AMS Controls, Inc.
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:44:4:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5444 to AMS Controls, Inc.. 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:D5:44:4, it is AMS Controls, Inc. hardware.

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