SHANGHAI SUNMON COMMUNICATION TECHNOGY CO.,LTD: MAC Prefix Identification
Summary
- // what this is
- Shanghai Sunmon Communication Technogy is registered to MAC prefix
30:92:F6and 1 more in the IEEE OUI database. When a device's MAC address begins with30:92:F6, that block was registered by Shanghai Sunmon Communication Technogy — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Each listed prefix fixes 24 bits of a 48-bit MAC identifier, leaving 24 suffix bits (16,777,216 possible values per prefix). The first octets 30 and 98 have Group and Local bits both zero. A matching address establishes a prefix match to the registry assignment, not a device, product, deployment, or shipment count.
About this vendor.
A MAC address beginning with 30:92:F6 or 98:47:3C matches an IEEE MA-L assignment registered to SHANGHAI SUNMON COMMUNICATION TECHNOGY CO.,LTD. This identifies the registry record associated with the prefix; it does not establish a particular device, product, deployment, or current company identity.
Each assignment fixes the first 24 bits of a 48-bit MAC address, leaving 24 suffix bits: 16,777,216 possible suffix values per prefix. The first octets, 30 and 98, both have Group and Local bits set to zero. For an address to match, its first three octets must equal one of the listed prefixes; a changed bit produces a different prefix. These possible suffix values are not a count of devices or shipments.
RFC 7042 explains that MAC identifiers combine an assigned prefix with remaining bits, and that Group and Local bits have defined significance. Treat a prefix match as evidence of the matching registry assignment only. Assignment dates are unavailable in these IEEE CSV records.
- Company
- SHANGHAI SUNMON COMMUNICATION TECHNOGY CO.,LTD [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
30:92:F6,98:47:3C[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- MAC address interpretation
- [Confirmed] — The listed 30:92:F6 and 98:47:3C prefixes are 24-bit MA-L prefixes, leaving 24 bits for the remainder of a 48-bit MAC address. Their group and local bits are both 0. RFC 7042 describes the 48-bit MAC structure and the significance of those bits; this interpretation does not establish device deployment or usage. https://www.rfc-editor.org/rfc/rfc7042.txt