Which company owns MAC address prefix B0:23:47?

MAC address prefix B0:23:47 is registered to Shenzhen Giant Microelectronics Company Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B0:23:47 has a network interface built by Shenzhen Giant Microelectronics Company Limited.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B0:23:47:00:00:00 that is B0:23:47 — 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 Giant Microelectronics Company Limited

MAC address prefix B0:23:47 is registered to Shenzhen Giant Microelectronics Company Limited in the IEEE OUI registry. Any device whose MAC address begins with B0:23:47 has a network interface built by Shenzhen Giant Microelectronics Company Limited. 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 B0:23:47:00:00:00 to B0:23:47:FF:FF:FF.

OUI prefix: B0:23:47
Hyphen form: B0-23-47
MAC range: B0:23:47:00:00:00 – B0:23:47:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen Giant Microelectronics Company Limited
Address: Room 2108, 21 Floor, Building No.1 of Chang Fu Jin Mao Tower, No.5 Shi Hua Road, Futian 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 (2)

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

2022-07-11Assigned to "Shenzhen Giant Microelectronics Company Limited"
archived source →
2026-07-17Assigned to "Shenzhen Giant Microelectronics Company Limited"

Nearby in the registry

The prefixes assigned immediately before and after B0:23:47:

FAQ

Which company owns MAC address prefix B0:23:47?: MAC address prefix B0:23:47 is registered to Shenzhen Giant Microelectronics Company Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B0:23:47 has a network interface built by Shenzhen Giant Microelectronics Company Limited.
What is the OUI B0:23:47?: B0:23:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Giant Microelectronics Company Limited. It covers every address from B0:23:47:00:00:00 to B0:23:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written B0-23-47.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B0:23:47:00:00:00 that is B0:23:47 — 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 Giant Microelectronics Company Limited located?: Shenzhen Giant Microelectronics Company Limited is listed at Room 2108, 21 Floor, Building No.1 of Chang Fu Jin Mao Tower, No.5 Shi Hua Road, Futian District Shenzhen Guangdong CN 518000 in the IEEE OUI registry entry for B0:23:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.