What this means
The IEEE assigned the MA-L block C03580 to A&R TECH. 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 C0:35:80, it is A&R TECH hardware.
Frequently Asked Questions
Who owns MAC prefix C03580?
C03580 is registered to A&R TECH in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. A&R TECH's block covers 16,777,216 addresses.
What devices use C03580?
Any network device with a MAC address starting C0:35:80 was manufactured by or for A&R TECH.