What this means
The IEEE assigned the MA-L block E49069 to Rockwell Automation. 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 E4:90:69, it is Rockwell Automation hardware.
Frequently Asked Questions
Who owns MAC prefix E49069?
E49069 is registered to Rockwell Automation 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. Rockwell Automation's block covers 16,777,216 addresses.
What devices use E49069?
Any network device with a MAC address starting E4:90:69 was manufactured by or for Rockwell Automation.