What this means
The IEEE assigned the MA-S block 70B3D5231 to DELTA TAU DATA SYSTEMS, 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:D5:23:1, it is DELTA TAU DATA SYSTEMS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5231?
70B3D5231 is registered to DELTA TAU DATA SYSTEMS, INC. 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. DELTA TAU DATA SYSTEMS, INC.'s block covers 4,096 addresses.
What devices use 70B3D5231?
Any network device with a MAC address starting 70:B3:D5:23:1 was manufactured by or for DELTA TAU DATA SYSTEMS, INC..