Which company owns MAC address prefix D4:66:63?

MAC address prefix D4:66:63 is registered to Shenzhen Detran Technology Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:66:63 has a network interface built by Shenzhen Detran Technology Co.,Ltd..

What is the OUI D4:66:63?

D4:66:63 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Detran Technology Co.,Ltd.. It covers every address from D4:66:63:00:00:00 to D4:66:63:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-66-63.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D4:66:63:00:00:00 that is D4:66:63 — 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 Detran Technology Co.,Ltd. located?

Shenzhen Detran Technology Co.,Ltd. is listed at 201, F5 Building, TCL International E City, Zhongshanyuan Rd. Nanshan District Shenzhen Guangdong CN 518052 in the IEEE OUI registry entry for D4:66:63. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Shenzhen Detran Technology Co.,Ltd.

MAC address prefix D4:66:63 is registered to Shenzhen Detran Technology Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with D4:66:63 has a network interface built by Shenzhen Detran 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 D4:66:63:00:00:00 to D4:66:63:FF:FF:FF.

OUI prefix: D4:66:63
Hyphen form: D4-66-63
MAC range: D4:66:63:00:00:00 – D4:66:63:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen Detran Technology Co.,Ltd.
Address: 201, F5 Building, TCL International E City, Zhongshanyuan Rd. Nanshan District Shenzhen Guangdong CN 518052
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.

2026-06-20Assigned to "Shenzhen Detran Technology Co.,Ltd."
archived source →
2026-07-17Assigned to "Shenzhen Detran Technology Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after D4:66:63:

FAQ

Which company owns MAC address prefix D4:66:63?: MAC address prefix D4:66:63 is registered to Shenzhen Detran Technology Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:66:63 has a network interface built by Shenzhen Detran Technology Co.,Ltd..
What is the OUI D4:66:63?: D4:66:63 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Detran Technology Co.,Ltd.. It covers every address from D4:66:63:00:00:00 to D4:66:63:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-66-63.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D4:66:63:00:00:00 that is D4:66:63 — 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 Detran Technology Co.,Ltd. located?: Shenzhen Detran Technology Co.,Ltd. is listed at 201, F5 Building, TCL International E City, Zhongshanyuan Rd. Nanshan District Shenzhen Guangdong CN 518052 in the IEEE OUI registry entry for D4:66:63. This is the address the organization registered with the IEEE, which may differ from its current operating address.