What this means
The IEEE assigned the MA-S block 70B3D52AB to NASA Johnson Space Center. 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:D5:2A:B, it is NASA Johnson Space Center hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D52AB?
70B3D52AB is registered to NASA Johnson Space Center 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. NASA Johnson Space Center's block covers 4,096 addresses.
What devices use 70B3D52AB?
Any network device with a MAC address starting 70:B3:D5:2A:B was manufactured by or for NASA Johnson Space Center.