Tongfang — 2 prefixes (MA-L + MA-M); PC ODM/EMS, OUI ≠ brand on the box (Tsinghua lineage)
Summary
- // what this is
- Tongfang computer is registered to MAC prefix
98:5F:4Fand 1 more in the IEEE OUI database. When a device's MAC address begins with98:5F:4F, that block was registered by Tongfang computer — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A Tongfang OUI usually indicates a PC or ODM-built laptop; the retail brand may differ from 'Tongfang.'
About this vendor.
Tongfang holds about 2 IEEE blocks registered as "Tongfang computer co.Ltd." in Beijing, China, spanning MA-L (24-bit) and MA-M (28-bit). Verified samples include 98:5F:4F (MA-L) and the MA-M sub-block 10:07:23:3/28. These OUIs appear on desktop and laptop PCs, electronics assembled for other brands, and some networking and IoT gear. Tongfang is associated with Tsinghua Holdings and Tsinghua Tongfang (THTF), and is a known ODM source for Clevo-style barebones laptops. This is an EMS/ODM "OUI ≠ brand" case: a Tongfang OUI can appear on a device sold under another brand or on Tongfang-branded PCs. Its Tsinghua lineage is an interesting cross-reference to the New H3C / Unigroup corporate family documented in a prior batch. For triage, a Tongfang OUI usually indicates a PC or ODM-built laptop, and the retail brand may differ from "Tongfang."
- IEEE assignment
- ~2 blocks → "Tongfang computer co.Ltd.", registered Beijing, China [Confirmed] — IEEE MA-L/MA-M
- Registry / block size
- MA-L + MA-M; ~2 blocks [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- Beijing, China [Confirmed] — maclookup.app
- Company status
- active; associated with Tsinghua Holdings / Tsinghua Tongfang (THTF) [Confirmed] — thtf.com.cn
- Device types
- desktop/laptop PCs, electronics assembled for other brands, some networking/IoT [Confirmed] — maclookup.app
- Notable products
- Tongfang-branded PCs; ODM laptops/barebones (a known Clevo-style ODM source)
- Verified prefix sample
- 98:5F:4F (MA-L), 10:07:23:3/28 (MA-M sub-block) [Confirmed] — maclookup.app
- Special note
- EMS/ODM "OUI ≠ brand" case. A Tongfang OUI can appear on a device sold under another brand or on Tongfang-branded PCs. Tsinghua lineage cross-references the New H3C / Unigroup family. 10:07:23 is a shared IEEE MA-M base range (the IEEE Registration Authority is its MA-L holder); only the assigned /28 sub-block 10:07:23:3 belongs to Tongfang, not the whole base OUI. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Tsinghua Holdings, Tsinghua Unigroup (corporate family)
- Analyst note
- A Tongfang OUI usually indicates a PC or ODM-built laptop; the retail brand may differ from "Tongfang."