What this means
The IEEE assigned the MA-L block 681FD8 to Siemens Industry, Inc.. 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 68:1F:D8, it is Siemens Industry, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 681FD8?
681FD8 is registered to Siemens Industry, Inc. 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. Siemens Industry, Inc.'s block covers 16,777,216 addresses.
What devices use 681FD8?
Any network device with a MAC address starting 68:1F:D8 was manufactured by or for Siemens Industry, Inc..