What this means
The IEEE assigned the MA-M block 18A59C4 to IT-1. 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 18:A5:9C:4, it is IT-1 hardware.
Frequently Asked Questions
Who owns MAC prefix 18A59C4?
18A59C4 is registered to IT-1 in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. IT-1's block covers 1,048,576 addresses.
What devices use 18A59C4?
Any network device with a MAC address starting 18:A5:9C:4 was manufactured by or for IT-1.