What this means
The IEEE assigned the MA-L block 0010D9 to IBM JAPAN, FUJISAWA MT+D. 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 00:10:D9, it is IBM JAPAN, FUJISAWA MT+D hardware.
Frequently Asked Questions
Who owns MAC prefix 0010D9?
0010D9 is registered to IBM JAPAN, FUJISAWA MT+D 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. IBM JAPAN, FUJISAWA MT+D's block covers 16,777,216 addresses.
What devices use 0010D9?
Any network device with a MAC address starting 00:10:D9 was manufactured by or for IBM JAPAN, FUJISAWA MT+D.