What this means
The IEEE assigned the MA-L block 101F74 to Hewlett Packard. 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 10:1F:74, it is Hewlett Packard hardware.
Frequently Asked Questions
Who owns MAC prefix 101F74?
101F74 is registered to Hewlett Packard 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. Hewlett Packard's block covers 16,777,216 addresses.
What devices use 101F74?
Any network device with a MAC address starting 10:1F:74 was manufactured by or for Hewlett Packard.