Which company owns MAC address prefix F4:5B:73?

MAC address prefix F4:5B:73 is registered to Wanjiaan Interconnected Technology Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:5B:73 has a network interface built by Wanjiaan Interconnected Technology Co., Ltd.

What is the OUI F4:5B:73?

F4:5B:73 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wanjiaan Interconnected Technology Co., Ltd. It covers every address from F4:5B:73:00:00:00 to F4:5B:73:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-5B-73.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:5B:73:00:00:00 that is F4:5B:73 — 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 Wanjiaan Interconnected Technology Co., Ltd located?

Wanjiaan Interconnected Technology Co., Ltd is listed at 2nd Floor,Incubation Building, Science Development Institute of China, High-tech South 1st Street, Nanshan District Shenzhen Guangdong CN 518040 in the IEEE OUI registry entry for F4:5B:73. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Wanjiaan Interconnected Technology Co., Ltd

MAC address prefix F4:5B:73 is registered to Wanjiaan Interconnected Technology Co., Ltd in the IEEE OUI registry. Any device whose MAC address begins with F4:5B:73 has a network interface built by Wanjiaan Interconnected Technology Co., Ltd. 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 F4:5B:73:00:00:00 to F4:5B:73:FF:FF:FF.

OUI prefix: F4:5B:73
Hyphen form: F4-5B-73
MAC range: F4:5B:73:00:00:00 – F4:5B:73:FF:FF:FF
Addresses in block: 16,777,216
Organization: Wanjiaan Interconnected Technology Co., Ltd
Address: 2nd Floor,Incubation Building, Science Development Institute of China, High-tech South 1st Street, Nanshan District Shenzhen Guangdong CN 518040
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 "Wanjiaan Interconnected Technology Co., Ltd"
archived source →
2026-07-17Assigned to "Wanjiaan Interconnected Technology Co., Ltd"

Nearby in the registry

The prefixes assigned immediately before and after F4:5B:73:

FAQ

Which company owns MAC address prefix F4:5B:73?: MAC address prefix F4:5B:73 is registered to Wanjiaan Interconnected Technology Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:5B:73 has a network interface built by Wanjiaan Interconnected Technology Co., Ltd.
What is the OUI F4:5B:73?: F4:5B:73 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wanjiaan Interconnected Technology Co., Ltd. It covers every address from F4:5B:73:00:00:00 to F4:5B:73:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-5B-73.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:5B:73:00:00:00 that is F4:5B:73 — 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 Wanjiaan Interconnected Technology Co., Ltd located?: Wanjiaan Interconnected Technology Co., Ltd is listed at 2nd Floor,Incubation Building, Science Development Institute of China, High-tech South 1st Street, Nanshan District Shenzhen Guangdong CN 518040 in the IEEE OUI registry entry for F4:5B:73. This is the address the organization registered with the IEEE, which may differ from its current operating address.