What this means
The IEEE assigned the MA-L block 381730 to Ulrich Lippert GmbH & Co KG. 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 38:17:30, it is Ulrich Lippert GmbH & Co KG hardware.
Frequently Asked Questions
Who owns MAC prefix 381730?
381730 is registered to Ulrich Lippert GmbH & Co KG 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. Ulrich Lippert GmbH & Co KG's block covers 16,777,216 addresses.
What devices use 381730?
Any network device with a MAC address starting 38:17:30 was manufactured by or for Ulrich Lippert GmbH & Co KG.