Who owns MAC prefix D4B7D0?

D4B7D0 is registered to Ciena Corporation in the IEEE MA-L registry.

What devices use D4B7D0?

Any network device with a MAC address starting D4:B7:D0 was manufactured by or for Ciena Corporation.

MA-L · OUI prefix

Ciena Corporation

Any MAC address starting D4:B7:D0 is registered to Ciena Corporation in US.

OUI prefix	D4B7D0
Vendor	Ciena Corporation
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	D4:B7:D0:00:00:00

What this means

The IEEE assigned the MA-L block D4B7D0 to Ciena 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 D4:B7:D0, it is Ciena Corporation hardware.

Other Ciena Corporation prefixes

Ciena Corporation holds 30 registered blocks in total.

00238A 0479FD 144E2A 1892A4 1C1161 2465E1 208058 2C39C1 2C4A11 54C33E 5C07A4 7487BB all 30 »

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