What this means
The IEEE assigned the MA-S block 70B3D5514 to Intelligent Security Systems (ISS). 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:D5:51:4, it is Intelligent Security Systems (ISS) hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D5514?
70B3D5514 is registered to Intelligent Security Systems (ISS) 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. Intelligent Security Systems (ISS)'s block covers 4,096 addresses.
What devices use 70B3D5514?
Any network device with a MAC address starting 70:B3:D5:51:4 was manufactured by or for Intelligent Security Systems (ISS).