Semptian Co., Ltd. MAC prefixes: vendor assignment; device type unknown
Summary
- // what this is
- Semptian is registered to MAC prefix
00:28:9Fand 1 more in the IEEE OUI database. When a device's MAC address begins with00:28:9F, that block was registered by Semptian — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
About this vendor.
A MAC address beginning with 00:28:9F or FC:76:92 matches an IEEE MA-L assignment to Semptian Co., Ltd.; the available evidence does not identify a device type for either prefix. The registry match identifies the registered organization and prefix only, not a particular device, product, operating system, current vendor identity, or security state.
Each prefix is 24 bits, leaving 24 bits for suffix values: 16,777,216 possible values under each prefix. That is a mathematical address space, not a count of devices or shipments. RFC 7042 explains that the first-octet Group bit is 01 and Local bit is 02. For both exact prefixes these bits are zero, so the matching boundary is the full first 24 bits. Turning either bit on changes the first octet and therefore yields a different literal prefix.
Both IEEE MA-L records list China in their organization address. The supplied evidence contains no company product, industry, or device-category information, so those details cannot be established here.
- Registry match
- The IEEE MA-L records list two name variants for the assignments: “Semptian Co., Ltd.” and “Semptian Co.,Ltd.” [Confirmed]
- Matching prefixes
00:28:9FandFC:76:92; each match is based on the first 24 bits. [Confirmed]- Country
- China is indicated in both IEEE records. [Confirmed]
- Device type
- Unknown; the available evidence does not map either exact prefix to a device category. [Unknown]
- Company
- Semptian Co., Ltd. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:28:9F,FC:76:92[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- China [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment dates
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Notable products
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Website
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Organization status
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Related vendors
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Historic prefix
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv