What this means
The IEEE assigned the MA-L block E89E13 to CRESYN. 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 E8:9E:13, it is CRESYN hardware.
Frequently Asked Questions
Who owns MAC prefix E89E13?
E89E13 is registered to CRESYN 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. CRESYN's block covers 16,777,216 addresses.
What devices use E89E13?
Any network device with a MAC address starting E8:9E:13 was manufactured by or for CRESYN.