Who owns MAC prefix A47F1B?

A47F1B is registered to Juniper Networks in the IEEE MA-L registry.

What devices use A47F1B?

Any network device with a MAC address starting A4:7F:1B was manufactured by or for Juniper Networks.

MA-L · OUI prefix

Juniper Networks

Any MAC address starting A4:7F:1B is registered to Juniper Networks in US.

OUI prefix	A47F1B
Vendor	Juniper Networks
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	A4:7F:1B:00:00:00

What this means

The IEEE assigned the MA-L block A47F1B to Juniper Networks. 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 A4:7F:1B, it is Juniper Networks hardware.

Other Juniper Networks prefixes

Juniper Networks holds 209 registered blocks in total.

000585 0010DB 00121E 0014F6 0017CB 0019E2 001BC0 001DB5 001F12 002159 002283 00239C all 209 »

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