What this means
The IEEE assigned the MA-L block 74D5B8 to Infraeo Inc. 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:D5:B8, it is Infraeo Inc hardware.
Frequently Asked Questions
Who owns MAC prefix 74D5B8?
74D5B8 is registered to Infraeo Inc 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. Infraeo Inc's block covers 16,777,216 addresses.
What devices use 74D5B8?
Any network device with a MAC address starting 74:D5:B8 was manufactured by or for Infraeo Inc.