Which company owns MAC address prefix 90:7A:58?

MAC address prefix 90:7A:58 is registered to Zegna-Daidong Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:7A:58 has a network interface built by Zegna-Daidong Limited.

What is the OUI 90:7A:58?

90:7A:58 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zegna-Daidong Limited. It covers every address from 90:7A:58:00:00:00 to 90:7A:58:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-7A-58.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:7A:58:00:00:00 that is 90:7A:58 — 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 Zegna-Daidong Limited located?

Zegna-Daidong Limited is listed at Rooms 14-17, 18/F, Nan Fung Commercial, Centre 19 Lam Lok Street, Kowloon Bay Hong Kong HK 999077 in the IEEE OUI registry entry for 90:7A:58. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Zegna-Daidong Limited own?

Zegna-Daidong Limited holds 2 OUI prefixes in the IEEE registry, of which 90:7A:58 is one. A device made by Zegna-Daidong Limited could carry a MAC address from any of them.

Zegna-Daidong Limited

MAC address prefix 90:7A:58 is registered to Zegna-Daidong Limited in the IEEE OUI registry. Any device whose MAC address begins with 90:7A:58 has a network interface built by Zegna-Daidong 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 90:7A:58:00:00:00 to 90:7A:58:FF:FF:FF.

OUI prefix: 90:7A:58
Hyphen form: 90-7A-58
MAC range: 90:7A:58:00:00:00 – 90:7A:58:FF:FF:FF
Addresses in block: 16,777,216
Organization: Zegna-Daidong Limited
Address: Rooms 14-17, 18/F, Nan Fung Commercial, Centre 19 Lam Lok Street, Kowloon Bay Hong Kong HK 999077
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 Zegna-Daidong Limited

Zegna-Daidong Limited holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

74:B7:E6

Assignment history (2)

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

2018-12-21Assigned to "Zegna-Daidong Limited"
archived source →
2026-07-17Assigned to "Zegna-Daidong Limited"

Nearby in the registry

The prefixes assigned immediately before and after 90:7A:58:

FAQ

Which company owns MAC address prefix 90:7A:58?: MAC address prefix 90:7A:58 is registered to Zegna-Daidong Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:7A:58 has a network interface built by Zegna-Daidong Limited.
What is the OUI 90:7A:58?: 90:7A:58 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zegna-Daidong Limited. It covers every address from 90:7A:58:00:00:00 to 90:7A:58:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-7A-58.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:7A:58:00:00:00 that is 90:7A:58 — 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 Zegna-Daidong Limited located?: Zegna-Daidong Limited is listed at Rooms 14-17, 18/F, Nan Fung Commercial, Centre 19 Lam Lok Street, Kowloon Bay Hong Kong HK 999077 in the IEEE OUI registry entry for 90:7A:58. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Zegna-Daidong Limited own?: Zegna-Daidong Limited holds 2 OUI prefixes in the IEEE registry, of which 90:7A:58 is one. A device made by Zegna-Daidong Limited could carry a MAC address from any of them.