Which company owns MAC address prefix 4C:D7:3A?

MAC address prefix 4C:D7:3A is registered to ShenZhen XinZhongXin Technology Co.， Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 4C:D7:3A has a network interface built by ShenZhen XinZhongXin Technology Co.， Ltd.

What is the OUI 4C:D7:3A?

4C:D7:3A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ShenZhen XinZhongXin Technology Co.， Ltd. It covers every address from 4C:D7:3A:00:00:00 to 4C:D7:3A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 4C-D7-3A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 4C:D7:3A:00:00:00 that is 4C:D7:3A — 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 ShenZhen XinZhongXin Technology Co.， Ltd located?

ShenZhen XinZhongXin Technology Co.， Ltd is listed at Building A2,Donghuan Industrial Zone,No.293,Nanpu Road,Xinqiao Sub-district,Bao'an District,Shenzhen City,Guangdong Province ShenZhen CN 518104 in the IEEE OUI registry entry for 4C:D7:3A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does ShenZhen XinZhongXin Technology Co.， Ltd own?

ShenZhen XinZhongXin Technology Co.， Ltd holds 3 OUI prefixes in the IEEE registry, of which 4C:D7:3A is one. A device made by ShenZhen XinZhongXin Technology Co.， Ltd could carry a MAC address from any of them.

ShenZhen XinZhongXin Technology Co.， Ltd

MAC address prefix 4C:D7:3A is registered to ShenZhen XinZhongXin Technology Co.， Ltd in the IEEE OUI registry. Any device whose MAC address begins with 4C:D7:3A has a network interface built by ShenZhen XinZhongXin 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 4C:D7:3A:00:00:00 to 4C:D7:3A:FF:FF:FF.

OUI prefix: 4C:D7:3A
Hyphen form: 4C-D7-3A
MAC range: 4C:D7:3A:00:00:00 – 4C:D7:3A:FF:FF:FF
Addresses in block: 16,777,216
Organization: ShenZhen XinZhongXin Technology Co.， Ltd
Address: Building A2,Donghuan Industrial Zone,No.293,Nanpu Road,Xinqiao Sub-district,Bao'an District,Shenzhen City,Guangdong Province ShenZhen CN 518104
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 XinZhongXin Technology Co.， Ltd

ShenZhen XinZhongXin Technology Co.， Ltd holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 XinZhongXin Technology Co.， Ltd"
archived source →
2026-07-17Assigned to "ShenZhen XinZhongXin Technology Co.， Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 4C:D7:3A:

FAQ

Which company owns MAC address prefix 4C:D7:3A?: MAC address prefix 4C:D7:3A is registered to ShenZhen XinZhongXin Technology Co.， Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 4C:D7:3A has a network interface built by ShenZhen XinZhongXin Technology Co.， Ltd.
What is the OUI 4C:D7:3A?: 4C:D7:3A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ShenZhen XinZhongXin Technology Co.， Ltd. It covers every address from 4C:D7:3A:00:00:00 to 4C:D7:3A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 4C-D7-3A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 4C:D7:3A:00:00:00 that is 4C:D7:3A — 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 ShenZhen XinZhongXin Technology Co.， Ltd located?: ShenZhen XinZhongXin Technology Co.， Ltd is listed at Building A2,Donghuan Industrial Zone,No.293,Nanpu Road,Xinqiao Sub-district,Bao'an District,Shenzhen City,Guangdong Province ShenZhen CN 518104 in the IEEE OUI registry entry for 4C:D7:3A. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does ShenZhen XinZhongXin Technology Co.， Ltd own?: ShenZhen XinZhongXin Technology Co.， Ltd holds 3 OUI prefixes in the IEEE registry, of which 4C:D7:3A is one. A device made by ShenZhen XinZhongXin Technology Co.， Ltd could carry a MAC address from any of them.