Which company owns MAC address prefix 5C:F5:3A?

MAC address prefix 5C:F5:3A is registered to Zhongge Smart Technology(Shanghai) Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:F5:3A has a network interface built by Zhongge Smart Technology(Shanghai) Co., Ltd.

What is the OUI 5C:F5:3A?

5C:F5:3A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zhongge Smart Technology(Shanghai) Co., Ltd. It covers every address from 5C:F5:3A:00:00:00 to 5C:F5:3A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-F5-3A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 5C:F5:3A:00:00:00 that is 5C:F5:3A — 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 Zhongge Smart Technology(Shanghai) Co., Ltd located?

Zhongge Smart Technology(Shanghai) Co., Ltd is listed at 5F Tower G WEST LINK, No. 2337 Gudai Road, Minhang District, Shanghai, China Shanghai Shanghai CN 201100 in the IEEE OUI registry entry for 5C:F5:3A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Zhongge Smart Technology(Shanghai) Co., Ltd

MAC address prefix 5C:F5:3A is registered to Zhongge Smart Technology(Shanghai) Co., Ltd in the IEEE OUI registry. Any device whose MAC address begins with 5C:F5:3A has a network interface built by Zhongge Smart Technology(Shanghai) 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 5C:F5:3A:00:00:00 to 5C:F5:3A:FF:FF:FF.

OUI prefix: 5C:F5:3A
Hyphen form: 5C-F5-3A
MAC range: 5C:F5:3A:00:00:00 – 5C:F5:3A:FF:FF:FF
Addresses in block: 16,777,216
Organization: Zhongge Smart Technology(Shanghai) Co., Ltd
Address: 5F Tower G WEST LINK, No. 2337 Gudai Road, Minhang District, Shanghai, China Shanghai Shanghai CN 201100
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.

2026-01-08Assigned to "Zhongge Smart Technology(Shanghai) Co., Ltd"
archived source →
2026-07-17Assigned to "Zhongge Smart Technology(Shanghai) Co., Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 5C:F5:3A:

FAQ

Which company owns MAC address prefix 5C:F5:3A?: MAC address prefix 5C:F5:3A is registered to Zhongge Smart Technology(Shanghai) Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:F5:3A has a network interface built by Zhongge Smart Technology(Shanghai) Co., Ltd.
What is the OUI 5C:F5:3A?: 5C:F5:3A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zhongge Smart Technology(Shanghai) Co., Ltd. It covers every address from 5C:F5:3A:00:00:00 to 5C:F5:3A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-F5-3A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 5C:F5:3A:00:00:00 that is 5C:F5:3A — 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 Zhongge Smart Technology(Shanghai) Co., Ltd located?: Zhongge Smart Technology(Shanghai) Co., Ltd is listed at 5F Tower G WEST LINK, No. 2337 Gudai Road, Minhang District, Shanghai, China Shanghai Shanghai CN 201100 in the IEEE OUI registry entry for 5C:F5:3A. This is the address the organization registered with the IEEE, which may differ from its current operating address.