What this means
The IEEE assigned the MA-L block 000633 to Crossmatch Technologies/HID Global. 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 00:06:33, it is Crossmatch Technologies/HID Global hardware.
Frequently Asked Questions
Who owns MAC prefix 000633?
000633 is registered to Crossmatch Technologies/HID Global 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. Crossmatch Technologies/HID Global's block covers 16,777,216 addresses.
What devices use 000633?
Any network device with a MAC address starting 00:06:33 was manufactured by or for Crossmatch Technologies/HID Global.