Which company owns MAC address prefix 74:DD:CB?

MAC address prefix 74:DD:CB is registered to China Leadshine Technology Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:DD:CB has a network interface built by China Leadshine Technology Co.,Ltd.

What is the OUI 74:DD:CB?

74:DD:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to China Leadshine Technology Co.,Ltd. It covers every address from 74:DD:CB:00:00:00 to 74:DD:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-DD-CB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 74:DD:CB:00:00:00 that is 74:DD:CB — 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 China Leadshine Technology Co.,Ltd located?

China Leadshine Technology Co.,Ltd is listed at 9-11, Building A3, Nanshan Ipark, No.1001 Xueyuan Avenue, Nanshan? SHENZHEN CN 518000 in the IEEE OUI registry entry for 74:DD:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

China Leadshine Technology Co.,Ltd

MAC address prefix 74:DD:CB is registered to China Leadshine Technology Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 74:DD:CB has a network interface built by China Leadshine 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 74:DD:CB:00:00:00 to 74:DD:CB:FF:FF:FF.

OUI prefix: 74:DD:CB
Hyphen form: 74-DD-CB
MAC range: 74:DD:CB:00:00:00 – 74:DD:CB:FF:FF:FF
Addresses in block: 16,777,216
Organization: China Leadshine Technology Co.,Ltd
Address: 9-11, Building A3, Nanshan Ipark, No.1001 Xueyuan Avenue, Nanshan? SHENZHEN CN 518000
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.

2022-07-11Assigned to "China Leadshine Technology Co.,Ltd"
archived source →
2026-07-17Assigned to "China Leadshine Technology Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 74:DD:CB:

FAQ

Which company owns MAC address prefix 74:DD:CB?: MAC address prefix 74:DD:CB is registered to China Leadshine Technology Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:DD:CB has a network interface built by China Leadshine Technology Co.,Ltd.
What is the OUI 74:DD:CB?: 74:DD:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to China Leadshine Technology Co.,Ltd. It covers every address from 74:DD:CB:00:00:00 to 74:DD:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-DD-CB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 74:DD:CB:00:00:00 that is 74:DD:CB — 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 China Leadshine Technology Co.,Ltd located?: China Leadshine Technology Co.,Ltd is listed at 9-11, Building A3, Nanshan Ipark, No.1001 Xueyuan Avenue, Nanshan? SHENZHEN CN 518000 in the IEEE OUI registry entry for 74:DD:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.