Which company owns MAC address prefix 90:3D:6B?

MAC address prefix 90:3D:6B is registered to Zicon Technology Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:3D:6B has a network interface built by Zicon Technology Corp..

What is the OUI 90:3D:6B?

90:3D:6B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zicon Technology Corp.. It covers every address from 90:3D:6B:00:00:00 to 90:3D:6B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-3D-6B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:3D:6B:00:00:00 that is 90:3D:6B — 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 Zicon Technology Corp. located?

Zicon Technology Corp. is listed at 15F., No.688-2, Zhongzheng Rd., Zhonghe City, Taipei County 235 Taipei TW 23586 in the IEEE OUI registry entry for 90:3D:6B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Zicon Technology Corp.

MAC address prefix 90:3D:6B is registered to Zicon Technology Corp. in the IEEE OUI registry. Any device whose MAC address begins with 90:3D:6B has a network interface built by Zicon Technology Corp.. 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 90:3D:6B:00:00:00 to 90:3D:6B:FF:FF:FF.

OUI prefix: 90:3D:6B
Hyphen form: 90-3D-6B
MAC range: 90:3D:6B:00:00:00 – 90:3D:6B:FF:FF:FF
Addresses in block: 16,777,216
Organization: Zicon Technology Corp.
Address: 15F., No.688-2, Zhongzheng Rd., Zhonghe City, Taipei County 235 Taipei TW 23586
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 "Zicon Technology Corp."
archived source →
2026-07-17Assigned to "Zicon Technology Corp."

Nearby in the registry

The prefixes assigned immediately before and after 90:3D:6B:

FAQ

Which company owns MAC address prefix 90:3D:6B?: MAC address prefix 90:3D:6B is registered to Zicon Technology Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:3D:6B has a network interface built by Zicon Technology Corp..
What is the OUI 90:3D:6B?: 90:3D:6B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zicon Technology Corp.. It covers every address from 90:3D:6B:00:00:00 to 90:3D:6B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-3D-6B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:3D:6B:00:00:00 that is 90:3D:6B — 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 Zicon Technology Corp. located?: Zicon Technology Corp. is listed at 15F., No.688-2, Zhongzheng Rd., Zhonghe City, Taipei County 235 Taipei TW 23586 in the IEEE OUI registry entry for 90:3D:6B. This is the address the organization registered with the IEEE, which may differ from its current operating address.