What this means
The IEEE assigned the MA-L block C8873B to Net Optics. 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 C8:87:3B, it is Net Optics hardware.
Frequently Asked Questions
Who owns MAC prefix C8873B?
C8873B is registered to Net Optics 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. Net Optics's block covers 16,777,216 addresses.
What devices use C8873B?
Any network device with a MAC address starting C8:87:3B was manufactured by or for Net Optics.