What this means
The IEEE assigned the MA-L block AC4B1E to Integri-Sys.Com LLC. 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 AC:4B:1E, it is Integri-Sys.Com LLC hardware.
Frequently Asked Questions
Who owns MAC prefix AC4B1E?
AC4B1E is registered to Integri-Sys.Com LLC 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. Integri-Sys.Com LLC's block covers 16,777,216 addresses.
What devices use AC4B1E?
Any network device with a MAC address starting AC:4B:1E was manufactured by or for Integri-Sys.Com LLC.