What this means
The IEEE assigned the MA-L block A4D8CA to HONG KONG WATER WORLD TECHNOLOGY CO. LIMITED. 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 A4:D8:CA, it is HONG KONG WATER WORLD TECHNOLOGY CO. LIMITED hardware.
Frequently Asked Questions
Who owns MAC prefix A4D8CA?
A4D8CA is registered to HONG KONG WATER WORLD TECHNOLOGY CO. LIMITED 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. HONG KONG WATER WORLD TECHNOLOGY CO. LIMITED's block covers 16,777,216 addresses.
What devices use A4D8CA?
Any network device with a MAC address starting A4:D8:CA was manufactured by or for HONG KONG WATER WORLD TECHNOLOGY CO. LIMITED.