What this means
The IEEE assigned the MA-L block 74819A to PT. Hartono Istana Teknologi. 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 74:81:9A, it is PT. Hartono Istana Teknologi hardware.
Frequently Asked Questions
Who owns MAC prefix 74819A?
74819A is registered to PT. Hartono Istana Teknologi 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. PT. Hartono Istana Teknologi's block covers 16,777,216 addresses.
What devices use 74819A?
Any network device with a MAC address starting 74:81:9A was manufactured by or for PT. Hartono Istana Teknologi.