Which company owns MAC address prefix 28:AF:E5?

MAC address prefix 28:AF:E5 is registered to Shenzhen C-Data Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 28:AF:E5 has a network interface built by Shenzhen C-Data Technology Co., Ltd..

What is the OUI 28:AF:E5?

28:AF:E5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen C-Data Technology Co., Ltd.. It covers every address from 28:AF:E5:00:00:00 to 28:AF:E5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 28-AF-E5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 28:AF:E5:00:00:00 that is 28:AF:E5 — 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 C-Data Technology Co., Ltd. located?

Shenzhen C-Data Technology Co., Ltd. is listed at #201, Building A4, Nanshan Zhiyuan, No.1001, Xueyuan Avenue, Changyuan Community,Taoyuan,Nanshan Shenzhen Guangdong CN 518055 in the IEEE OUI registry entry for 28:AF:E5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Shenzhen C-Data Technology Co., Ltd. own?

Shenzhen C-Data Technology Co., Ltd. holds 8 OUI prefixes in the IEEE registry, of which 28:AF:E5 is one. A device made by Shenzhen C-Data Technology Co., Ltd. could carry a MAC address from any of them.

Shenzhen C-Data Technology Co., Ltd.

MAC address prefix 28:AF:E5 is registered to Shenzhen C-Data Technology Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 28:AF:E5 has a network interface built by Shenzhen C-Data 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 28:AF:E5:00:00:00 to 28:AF:E5:FF:FF:FF.

OUI prefix: 28:AF:E5
Hyphen form: 28-AF-E5
MAC range: 28:AF:E5:00:00:00 – 28:AF:E5:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen C-Data Technology Co., Ltd.
Address: #201, Building A4, Nanshan Zhiyuan, No.1001, Xueyuan Avenue, Changyuan Community,Taoyuan,Nanshan Shenzhen Guangdong CN 518055
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.

Other prefixes from Shenzhen C-Data Technology Co., Ltd.

Shenzhen C-Data Technology Co., Ltd. holds 8 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 C-Data Technology Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 28:AF:E5:

FAQ

Which company owns MAC address prefix 28:AF:E5?: MAC address prefix 28:AF:E5 is registered to Shenzhen C-Data Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 28:AF:E5 has a network interface built by Shenzhen C-Data Technology Co., Ltd..
What is the OUI 28:AF:E5?: 28:AF:E5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen C-Data Technology Co., Ltd.. It covers every address from 28:AF:E5:00:00:00 to 28:AF:E5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 28-AF-E5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 28:AF:E5:00:00:00 that is 28:AF:E5 — 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 C-Data Technology Co., Ltd. located?: Shenzhen C-Data Technology Co., Ltd. is listed at #201, Building A4, Nanshan Zhiyuan, No.1001, Xueyuan Avenue, Changyuan Community,Taoyuan,Nanshan Shenzhen Guangdong CN 518055 in the IEEE OUI registry entry for 28:AF:E5. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Shenzhen C-Data Technology Co., Ltd. own?: Shenzhen C-Data Technology Co., Ltd. holds 8 OUI prefixes in the IEEE registry, of which 28:AF:E5 is one. A device made by Shenzhen C-Data Technology Co., Ltd. could carry a MAC address from any of them.