What this means
The IEEE assigned the MA-L block 001DDC to HangZhou DeChangLong Tech&Info Co.,Ltd. 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 00:1D:DC, it is HangZhou DeChangLong Tech&Info Co.,Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 001DDC?
001DDC is registered to HangZhou DeChangLong Tech&Info Co.,Ltd 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. HangZhou DeChangLong Tech&Info Co.,Ltd's block covers 16,777,216 addresses.
What devices use 001DDC?
Any network device with a MAC address starting 00:1D:DC was manufactured by or for HangZhou DeChangLong Tech&Info Co.,Ltd.