What this means
The IEEE assigned the MA-L block D49C53 to NETCRAZE LLC. 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 D4:9C:53, it is NETCRAZE LLC hardware.
Frequently Asked Questions
Who owns MAC prefix D49C53?
D49C53 is registered to NETCRAZE LLC 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. NETCRAZE LLC's block covers 16,777,216 addresses.
What devices use D49C53?
Any network device with a MAC address starting D4:9C:53 was manufactured by or for NETCRAZE LLC.