Which company owns MAC address prefix F0:9C:BB?

MAC address prefix F0:9C:BB is registered to RaonThink Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:9C:BB has a network interface built by RaonThink Inc..

What is the OUI F0:9C:BB?

F0:9C:BB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RaonThink Inc.. It covers every address from F0:9C:BB:00:00:00 to F0:9C:BB:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-9C-BB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F0:9C:BB:00:00:00 that is F0:9C:BB — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

Where is RaonThink Inc. located?

RaonThink Inc. is listed at 916, Byucksan Digital Valley 2-Cha, 481-10, Kasan-Dong, Kumcheon-Gu, Seoul KR 153-783 in the IEEE OUI registry entry for F0:9C:BB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

RaonThink Inc.

MAC address prefix F0:9C:BB is registered to RaonThink Inc. in the IEEE OUI registry. Any device whose MAC address begins with F0:9C:BB has a network interface built by RaonThink Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from F0:9C:BB:00:00:00 to F0:9C:BB:FF:FF:FF.

OUI prefix: F0:9C:BB
Hyphen form: F0-9C-BB
MAC range: F0:9C:BB:00:00:00 – F0:9C:BB:FF:FF:FF
Addresses in block: 16,777,216
Organization: RaonThink Inc.
Address: 916, Byucksan Digital Valley 2-Cha, 481-10, Kasan-Dong, Kumcheon-Gu, Seoul KR 153-783
Source: IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2016-07-29Assigned to "RaonThink Inc."
archived source →
2026-07-17Assigned to "RaonThink Inc."

Nearby in the registry

The prefixes assigned immediately before and after F0:9C:BB:

FAQ

Which company owns MAC address prefix F0:9C:BB?: MAC address prefix F0:9C:BB is registered to RaonThink Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:9C:BB has a network interface built by RaonThink Inc..
What is the OUI F0:9C:BB?: F0:9C:BB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RaonThink Inc.. It covers every address from F0:9C:BB:00:00:00 to F0:9C:BB:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-9C-BB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F0:9C:BB:00:00:00 that is F0:9C:BB — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is RaonThink Inc. located?: RaonThink Inc. is listed at 916, Byucksan Digital Valley 2-Cha, 481-10, Kasan-Dong, Kumcheon-Gu, Seoul KR 153-783 in the IEEE OUI registry entry for F0:9C:BB. This is the address the organization registered with the IEEE, which may differ from its current operating address.