Zegna-Daidong Limited MAC prefixes: device identity unknown
Summary
- // what this is
- Zegna-Daidong is registered to MAC prefix
90:7A:58and 1 more in the IEEE OUI database. When a device's MAC address begins with90:7A:58, that block was registered by Zegna-Daidong — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Both exact 24-bit prefixes have Group bit 0 and Local bit 0 in the first octet. Each leaves 24 suffix bits, or 16,777,216 possible suffix values; this is address space, not a device or shipment count. A prefix match identifies a registry assignment, not a particular device, operating system, current legal identity, or security state.
About this vendor.
A MAC address beginning with 90:7A:58 or 74:B7:E6 matches an IEEE MA-L assignment to Zegna-Daidong Limited; the specific device is unknown. The assignments identify a registry holder, not a particular product or deployed device.
Each prefix fixes the first 24 bits of a 48-bit MAC address, leaving 24 suffix bits and 16,777,216 possible suffix values per prefix. That number describes address space, not devices or shipments. In both prefixes, the first-byte Group and Local bits are zero, indicating individual and globally administered address form under RFC 7042. Changing either bit produces a different prefix.
The company profile describes household audio systems, headphones, digital voice recorders, power supplies, chargers, microphones, and other product categories. It also names robots, drones, AR/VR, gaming products, and other categories. The profile does not map any product or device category to these exact prefixes.
- Device identity
- Unknown; the prefix match does not identify a specific device [Unknown]
- Matching prefixes
90:7A:58and74:B7:E6, each an exact 24-bit boundary [Confirmed]- Registry
- MA-L; 2 assignments [Confirmed]
- Company
- Zegna-Daidong Limited [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- Hong Kong [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
90:7A:58,74:B7:E6[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Industry
- Electronics manufacturing, including household audio and other electronic products [Confirmed] — https://www.zdldg.com/en/about-17/
- Notable products
- Household audio systems, earphones and headphones, digital voice recorders, power supplies, chargers, microphones, robots, drones, AR/VR, gaming products [Confirmed] — https://www.zdldg.com/en/about-17/
- Related vendors
- Sony; ThunderSoft; Ulike; Ximmerse; Aifrutech; AirTAC; Colean; Unknown Planet [Confirmed as named customers] — https://www.zdldg.com/en/about-17/
- Device types
- Unknown; no device category is mapped to these exact prefixes [Unknown]
- Assignment dates
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv