Which company owns MAC address prefix 78:44:4A?

MAC address prefix 78:44:4A is registered to Shenzhen Aiwinn information Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:44:4A has a network interface built by Shenzhen Aiwinn information Technology Co., Ltd..

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:44:4A:00:00:00 that is 78:44:4A — 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.

Shenzhen Aiwinn information Technology Co., Ltd.

MAC address prefix 78:44:4A is registered to Shenzhen Aiwinn information Technology Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 78:44:4A has a network interface built by Shenzhen Aiwinn information 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 78:44:4A:00:00:00 to 78:44:4A:FF:FF:FF.

OUI prefix: 78:44:4A
Hyphen form: 78-44-4A
MAC range: 78:44:4A:00:00:00 – 78:44:4A:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen Aiwinn information Technology Co., Ltd.
Address: Room 1001, 10th floor, Building G3, TCL International E city, Shuguang community, Xili street, Nanshan district, Shenzhen GuangDong 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 (1)

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

2026-07-17Assigned to "Shenzhen Aiwinn information Technology Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 78:44:4A:

FAQ

Which company owns MAC address prefix 78:44:4A?: MAC address prefix 78:44:4A is registered to Shenzhen Aiwinn information Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:44:4A has a network interface built by Shenzhen Aiwinn information Technology Co., Ltd..
What is the OUI 78:44:4A?: 78:44:4A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Aiwinn information Technology Co., Ltd.. It covers every address from 78:44:4A:00:00:00 to 78:44:4A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-44-4A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:44:4A:00:00:00 that is 78:44:4A — 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 Shenzhen Aiwinn information Technology Co., Ltd. located?: Shenzhen Aiwinn information Technology Co., Ltd. is listed at Room 1001, 10th floor, Building G3, TCL International E city, Shuguang community, Xili street, Nanshan district, Shenzhen GuangDong CN 518000 in the IEEE OUI registry entry for 78:44:4A. This is the address the organization registered with the IEEE, which may differ from its current operating address.