Who owns MAC prefix 001DDB?

001DDB is registered to C-BEL Corporation in the IEEE MA-L registry.

What devices use 001DDB?

Any network device with a MAC address starting 00:1D:DB was manufactured by or for C-BEL Corporation.

MA-L · OUI prefix

C-BEL Corporation

Any MAC address starting 00:1D:DB is registered to C-BEL Corporation in JP.

OUI prefix	001DDB
Vendor	C-BEL Corporation
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	00:1D:DB:00:00:00

What this means

The IEEE assigned the MA-L block 001DDB to C-BEL 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 00:1D:DB, it is C-BEL Corporation hardware.

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