Which company owns MAC address prefix 34:1B:22?

MAC address prefix 34:1B:22 is registered to Grandbeing Technology Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:1B:22 has a network interface built by Grandbeing Technology Co., Ltd.

What is the OUI 34:1B:22?

34:1B:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Grandbeing Technology Co., Ltd. It covers every address from 34:1B:22:00:00:00 to 34:1B:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-1B-22.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 34:1B:22:00:00:00 that is 34:1B:22 — 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 Grandbeing Technology Co., Ltd located?

Grandbeing Technology Co., Ltd is listed at B-301,Science and Technology Building Phase II Shenzhen Guangdong CN 518000 in the IEEE OUI registry entry for 34:1B:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Grandbeing Technology Co., Ltd

MAC address prefix 34:1B:22 is registered to Grandbeing Technology Co., Ltd in the IEEE OUI registry. Any device whose MAC address begins with 34:1B:22 has a network interface built by Grandbeing 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 34:1B:22:00:00:00 to 34:1B:22:FF:FF:FF.

OUI prefix: 34:1B:22
Hyphen form: 34-1B-22
MAC range: 34:1B:22:00:00:00 – 34:1B:22:FF:FF:FF
Addresses in block: 16,777,216
Organization: Grandbeing Technology Co., Ltd
Address: B-301,Science and Technology Building Phase II 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.

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

Nearby in the registry

The prefixes assigned immediately before and after 34:1B:22:

FAQ

Which company owns MAC address prefix 34:1B:22?: MAC address prefix 34:1B:22 is registered to Grandbeing Technology Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:1B:22 has a network interface built by Grandbeing Technology Co., Ltd.
What is the OUI 34:1B:22?: 34:1B:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Grandbeing Technology Co., Ltd. It covers every address from 34:1B:22:00:00:00 to 34:1B:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-1B-22.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 34:1B:22:00:00:00 that is 34:1B:22 — 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 Grandbeing Technology Co., Ltd located?: Grandbeing Technology Co., Ltd is listed at B-301,Science and Technology Building Phase II Shenzhen Guangdong CN 518000 in the IEEE OUI registry entry for 34:1B:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.