Who owns MAC prefix 70B3D5F70?

70B3D5F70 is registered to Honeywell in the IEEE MA-S registry.

What devices use 70B3D5F70?

Any network device with a MAC address starting 70:B3:D5:F7:0 was manufactured by or for Honeywell.

MA-S · OUI prefix

Honeywell

Any MAC address starting 70:B3:D5:F7:0 is registered to Honeywell in US.

OUI prefix	70B3D5F70
Vendor	Honeywell
Registry	MA-S (36-bit, small block)
Country	US
Example MAC	70:B3:D5:F7:0:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5F70 to Honeywell. 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:F7:0, it is Honeywell hardware.

Other Honeywell prefixes

Honeywell holds 8 registered blocks in total.

00226A 004084 3009F9C 58FCC8 70B3D59A7 70B3D5F4D C4EFDA

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