What this means
The IEEE assigned the MA-L block 44422F to TESTOP CO.,LTD.. 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 44:42:2F, it is TESTOP CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 44422F?
44422F is registered to TESTOP CO.,LTD. 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. TESTOP CO.,LTD.'s block covers 16,777,216 addresses.
What devices use 44422F?
Any network device with a MAC address starting 44:42:2F was manufactured by or for TESTOP CO.,LTD..