What this means
The IEEE assigned the MA-L block AC1826 to Seiko Epson Corporation. 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 AC:18:26, it is Seiko Epson Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix AC1826?
AC1826 is registered to Seiko Epson Corporation 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. Seiko Epson Corporation's block covers 16,777,216 addresses.
What devices use AC1826?
Any network device with a MAC address starting AC:18:26 was manufactured by or for Seiko Epson Corporation.