What this means
The IEEE assigned the MA-S block 70B3D5A7F to AUDIO VISUAL DIGITAL SYSTEMS. 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:A7:F, it is AUDIO VISUAL DIGITAL SYSTEMS hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5A7F?
70B3D5A7F is registered to AUDIO VISUAL DIGITAL SYSTEMS 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. AUDIO VISUAL DIGITAL SYSTEMS's block covers 4,096 addresses.
What devices use 70B3D5A7F?
Any network device with a MAC address starting 70:B3:D5:A7:F was manufactured by or for AUDIO VISUAL DIGITAL SYSTEMS.