What this means
The IEEE assigned the MA-L block 001C39 to S Netsystems 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 00:1C:39, it is S Netsystems Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 001C39?
001C39 is registered to S Netsystems 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. S Netsystems Inc.'s block covers 16,777,216 addresses.
What devices use 001C39?
Any network device with a MAC address starting 00:1C:39 was manufactured by or for S Netsystems Inc..