What this means
The IEEE assigned the MA-L block 44F849 to Union Pacific Railroad. 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 44:F8:49, it is Union Pacific Railroad hardware.
Frequently Asked Questions
Who owns MAC prefix 44F849?
44F849 is registered to Union Pacific Railroad 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. Union Pacific Railroad's block covers 16,777,216 addresses.
What devices use 44F849?
Any network device with a MAC address starting 44:F8:49 was manufactured by or for Union Pacific Railroad.