Shanghai Tianhe Automation Instrumentation Co., Ltd. - MAC Prefix 70B3D5AFB (MA-S)

What this means

The IEEE assigned the MA-S block 70B3D5AFB to Shanghai Tianhe Automation Instrumentation Co., Ltd.. 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:AF:B, it is Shanghai Tianhe Automation Instrumentation Co., Ltd. hardware.

Frequently Asked Questions

Who owns MAC prefix 70B3D5AFB?

70B3D5AFB is registered to Shanghai Tianhe Automation Instrumentation Co., Ltd. in the IEEE MA-S registry.

What does the MA-S registry type mean?

An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. Shanghai Tianhe Automation Instrumentation Co., Ltd.'s block covers 4,096 addresses.

What devices use 70B3D5AFB?

Any network device with a MAC address starting 70:B3:D5:AF:B was manufactured by or for Shanghai Tianhe Automation Instrumentation Co., Ltd..

OUI prefix	70B3D5AFB
Vendor	Shanghai Tianhe Automation Instrumentation Co., Ltd.
Registry	MA-S (36-bit, small block)
Block size	4,096 addresses
Country	CN
Other blocks by this vendor	1 total
Example MAC	70:B3:D5:AF:B:00:00:00