Which company owns MAC address prefix 84:21:41?

MAC address prefix 84:21:41 is registered to Shenzhen Ginwave Technologies Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:21:41 has a network interface built by Shenzhen Ginwave Technologies Ltd..

What is the OUI 84:21:41?

84:21:41 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Ginwave Technologies Ltd.. It covers every address from 84:21:41:00:00:00 to 84:21:41:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-21-41.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 84:21:41:00:00:00 that is 84:21:41 — 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 Ginwave Technologies Ltd. located?

Shenzhen Ginwave Technologies Ltd. is listed at 4/F,R2-A,High-Tech Industrial Park Shenzhen Guangdong CN 518057 in the IEEE OUI registry entry for 84:21:41. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Shenzhen Ginwave Technologies Ltd.

MAC address prefix 84:21:41 is registered to Shenzhen Ginwave Technologies Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 84:21:41 has a network interface built by Shenzhen Ginwave Technologies 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 84:21:41:00:00:00 to 84:21:41:FF:FF:FF.

OUI prefix: 84:21:41
Hyphen form: 84-21-41
MAC range: 84:21:41:00:00:00 – 84:21:41:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen Ginwave Technologies Ltd.
Address: 4/F,R2-A,High-Tech Industrial Park Shenzhen Guangdong CN 518057
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 "Shenzhen Ginwave Technologies Ltd."
archived source →
2026-07-17Assigned to "Shenzhen Ginwave Technologies Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 84:21:41:

FAQ

Which company owns MAC address prefix 84:21:41?: MAC address prefix 84:21:41 is registered to Shenzhen Ginwave Technologies Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:21:41 has a network interface built by Shenzhen Ginwave Technologies Ltd..
What is the OUI 84:21:41?: 84:21:41 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Ginwave Technologies Ltd.. It covers every address from 84:21:41:00:00:00 to 84:21:41:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-21-41.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 84:21:41:00:00:00 that is 84:21:41 — 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 Ginwave Technologies Ltd. located?: Shenzhen Ginwave Technologies Ltd. is listed at 4/F,R2-A,High-Tech Industrial Park Shenzhen Guangdong CN 518057 in the IEEE OUI registry entry for 84:21:41. This is the address the organization registered with the IEEE, which may differ from its current operating address.