Who owns MAC prefix F4B52F?

F4B52F is registered to Juniper Networks in the IEEE MA-L registry.

What devices use F4B52F?

Any network device with a MAC address starting F4:B5:2F was manufactured by or for Juniper Networks.

MA-L · OUI prefix

Juniper Networks

Any MAC address starting F4:B5:2F is registered to Juniper Networks in US.

OUI prefix	F4B52F
Vendor	Juniper Networks
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	F4:B5:2F:00:00:00

What this means

The IEEE assigned the MA-L block F4B52F 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 F4:B5:2F, 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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