What this means
The IEEE assigned the MA-L block DC38E1 to Juniper Networks. 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 DC:38:E1, it is Juniper Networks hardware.
Frequently Asked Questions
Who owns MAC prefix DC38E1?
DC38E1 is registered to Juniper Networks 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. Juniper Networks's block covers 16,777,216 addresses.
What devices use DC38E1?
Any network device with a MAC address starting DC:38:E1 was manufactured by or for Juniper Networks.