What this means
The IEEE assigned the MA-L block 001553 to Cytyc Corporation. 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 00:15:53, it is Cytyc Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 001553?
001553 is registered to Cytyc Corporation 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. Cytyc Corporation's block covers 16,777,216 addresses.
What devices use 001553?
Any network device with a MAC address starting 00:15:53 was manufactured by or for Cytyc Corporation.