Which company owns MAC address prefix F4:3E:66?

MAC address prefix F4:3E:66 is registered to Bee Computing (HK) Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:3E:66 has a network interface built by Bee Computing (HK) Limited.

What is the OUI F4:3E:66?

F4:3E:66 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Bee Computing (HK) Limited. It covers every address from F4:3E:66:00:00:00 to F4:3E:66:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-3E-66.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:3E:66:00:00:00 that is F4:3E:66 — 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 Bee Computing (HK) Limited located?

Bee Computing (HK) Limited is listed at Room 1902, 19/F, Lee Garden One 33 Hysan Avenue, Causeway Bay Hong Kong HK 100043 in the IEEE OUI registry entry for F4:3E:66. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Bee Computing (HK) Limited

MAC address prefix F4:3E:66 is registered to Bee Computing (HK) Limited in the IEEE OUI registry. Any device whose MAC address begins with F4:3E:66 has a network interface built by Bee Computing (HK) Limited. 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 F4:3E:66:00:00:00 to F4:3E:66:FF:FF:FF.

OUI prefix: F4:3E:66
Hyphen form: F4-3E-66
MAC range: F4:3E:66:00:00:00 – F4:3E:66:FF:FF:FF
Addresses in block: 16,777,216
Organization: Bee Computing (HK) Limited
Address: Room 1902, 19/F, Lee Garden One 33 Hysan Avenue, Causeway Bay Hong Kong HK 100043
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.

2019-07-04Assigned to "Bee Computing (HK) Limited"
archived source →
2026-07-17Assigned to "Bee Computing (HK) Limited"

Nearby in the registry

The prefixes assigned immediately before and after F4:3E:66:

FAQ

Which company owns MAC address prefix F4:3E:66?: MAC address prefix F4:3E:66 is registered to Bee Computing (HK) Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:3E:66 has a network interface built by Bee Computing (HK) Limited.
What is the OUI F4:3E:66?: F4:3E:66 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Bee Computing (HK) Limited. It covers every address from F4:3E:66:00:00:00 to F4:3E:66:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-3E-66.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:3E:66:00:00:00 that is F4:3E:66 — 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 Bee Computing (HK) Limited located?: Bee Computing (HK) Limited is listed at Room 1902, 19/F, Lee Garden One 33 Hysan Avenue, Causeway Bay Hong Kong HK 100043 in the IEEE OUI registry entry for F4:3E:66. This is the address the organization registered with the IEEE, which may differ from its current operating address.