Who owns MAC prefix 001D20?

001D20 is registered to Comtrend Corporation in the IEEE MA-L registry.

What devices use 001D20?

Any network device with a MAC address starting 00:1D:20 was manufactured by or for Comtrend Corporation.

MA-L · OUI prefix

Comtrend Corporation

Any MAC address starting 00:1D:20 is registered to Comtrend Corporation in TW.

OUI prefix	001D20
Vendor	Comtrend Corporation
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	00:1D:20:00:00:00

What this means

The IEEE assigned the MA-L block 001D20 to Comtrend 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:20, it is Comtrend Corporation hardware.

Other Comtrend Corporation prefixes

Comtrend Corporation holds 10 registered blocks in total.

0030DA 1C6499 344763 3872C0 64680C A01842 C8D12A D8B6B7 F88E85

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