What this means
The IEEE assigned the MA-L block E89D87 to Toshiba. 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 E8:9D:87, it is Toshiba hardware.
Frequently Asked Questions
Who owns MAC prefix E89D87?
E89D87 is registered to Toshiba 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. Toshiba's block covers 16,777,216 addresses.
What devices use E89D87?
Any network device with a MAC address starting E8:9D:87 was manufactured by or for Toshiba.