Which company owns MAC address prefix 3C:BB:73?

MAC address prefix 3C:BB:73 is registered to Shenzhen Xinguodu Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 3C:BB:73 has a network interface built by Shenzhen Xinguodu Technology Co., Ltd..

What is the OUI 3C:BB:73?

3C:BB:73 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Xinguodu Technology Co., Ltd.. It covers every address from 3C:BB:73:00:00:00 to 3C:BB:73:FF:FF:FF, or 16,777,216 addresses in total. It is also written 3C-BB-73.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 3C:BB:73:00:00:00 that is 3C:BB:73 — 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 Xinguodu Technology Co., Ltd. located?

Shenzhen Xinguodu Technology Co., Ltd. is listed at F17A, JinSong Building, Tairan Industrial & Trade Park, Chegongmiao, Shennan Road，Futian District Shenzhen Guangdong CN 518040 in the IEEE OUI registry entry for 3C:BB:73. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Shenzhen Xinguodu Technology Co., Ltd. own?

Shenzhen Xinguodu Technology Co., Ltd. holds 2 OUI prefixes in the IEEE registry, of which 3C:BB:73 is one. A device made by Shenzhen Xinguodu Technology Co., Ltd. could carry a MAC address from any of them.

Shenzhen Xinguodu Technology Co., Ltd.

MAC address prefix 3C:BB:73 is registered to Shenzhen Xinguodu Technology Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 3C:BB:73 has a network interface built by Shenzhen Xinguodu 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 3C:BB:73:00:00:00 to 3C:BB:73:FF:FF:FF.

OUI prefix: 3C:BB:73
Hyphen form: 3C-BB-73
MAC range: 3C:BB:73:00:00:00 – 3C:BB:73:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen Xinguodu Technology Co., Ltd.
Address: F17A, JinSong Building, Tairan Industrial & Trade Park, Chegongmiao, Shennan Road，Futian District Shenzhen Guangdong CN 518040
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 Xinguodu Technology Co., Ltd.

Shenzhen Xinguodu Technology Co., Ltd. holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

40:C8:1F

Assignment history (2)

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

2016-07-29Assigned to "Shenzhen Xinguodu Technology Co., Ltd."
archived source →
2026-07-17Assigned to "Shenzhen Xinguodu Technology Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 3C:BB:73:

FAQ

Which company owns MAC address prefix 3C:BB:73?: MAC address prefix 3C:BB:73 is registered to Shenzhen Xinguodu Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 3C:BB:73 has a network interface built by Shenzhen Xinguodu Technology Co., Ltd..
What is the OUI 3C:BB:73?: 3C:BB:73 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Xinguodu Technology Co., Ltd.. It covers every address from 3C:BB:73:00:00:00 to 3C:BB:73:FF:FF:FF, or 16,777,216 addresses in total. It is also written 3C-BB-73.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 3C:BB:73:00:00:00 that is 3C:BB:73 — 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 Xinguodu Technology Co., Ltd. located?: Shenzhen Xinguodu Technology Co., Ltd. is listed at F17A, JinSong Building, Tairan Industrial & Trade Park, Chegongmiao, Shennan Road，Futian District Shenzhen Guangdong CN 518040 in the IEEE OUI registry entry for 3C:BB:73. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Shenzhen Xinguodu Technology Co., Ltd. own?: Shenzhen Xinguodu Technology Co., Ltd. holds 2 OUI prefixes in the IEEE registry, of which 3C:BB:73 is one. A device made by Shenzhen Xinguodu Technology Co., Ltd. could carry a MAC address from any of them.