Foxconn (the Hon Hai Technology Group) is the world's largest EMS/contract manufacturer, and its MAC footprint is spread across many distinct IEEE registrant strings that must be aliased to one family: "Hon Hai Precision Ind. Co.,Ltd." (note the compressed punctuation; ~135 blocks), "Hon Hai Precision Industry Co., Ltd." (~17 blocks), "Foxconn Technology Co., Ltd." (incl. an MA-S), "FOXCONN INTERCONNECT TECHNOLOGY", "Foxconn(NanJing) Communication Co.,Ltd.", and "FOXCONN" (US). Total holdings across all entities run into the hundreds of blocks. Verified samples include F8:DA:0C and AC:D1:B8 (Hon Hai Precision Ind.), EC:01:E2 (Foxconn NanJing), and 98:E7:9A (Foxconn). Many blocks carry Chinese manufacturing addresses (e.g., Chongqing) rather than the Tucheng/New Taipei HQ. These OUIs appear on nearly everything Foxconn assembles for other brands — smartphones, game consoles, PCs, motherboards, networking gear, connectors, and IoT — which makes this the archetypal case where the OUI identifies the contract manufacturer and tells you almost nothing about the brand on the box. A relevant corporate-history note: Foxconn Interconnect Technology (FIT / FIT Hon Teng) announced on 26 March 2018 a definitive agreement to acquire Belkin International (Belkin, Linksys, Wemo, Phyn) for about US$866 million, closing in September 2018. For triage, treat a Foxconn/Hon Hai OUI as "assembled by Foxconn for someone" and classify the device by DHCP hostname, model strings, or traffic behavior rather than by the OUI.
- IEEE assignment
- many entities — "Hon Hai Precision Ind. Co.,Ltd." (~135), "Hon Hai Precision Industry Co., Ltd." (~17), "Foxconn Technology Co., Ltd." (+MA-S), "FOXCONN INTERCONNECT TECHNOLOGY", "Foxconn(NanJing) Communication Co.,Ltd.", "FOXCONN" (US) [Confirmed] — IEEE MA-L/MA-S
- Registry / block size
- MA-L predominant + at least one MA-S (under Foxconn Technology Co.); hundreds of blocks across all entities [Confirmed per-string counts] — maclookup.app (IEEE-sourced)
- HQ / country
- parent HQ Tucheng, New Taipei, Taiwan; many blocks list Chinese manufacturing addresses (e.g., Building D21, No.1 East Zone 1st Road, Chongqing 401332, CN) [Confirmed] — maclookup.app
- Company status
- active; world's largest EMS/contract manufacturer (Hon Hai Technology Group) [Confirmed] — foxconn.com
- Device types
- smartphones, game consoles, PCs, motherboards, networking gear, connectors, IoT [Confirmed] — maclookup.app
- Notable products
- contract-assembled devices for many global brands (incl. iPhones); Belkin/Linksys/Wemo/Phyn via FIT
- Verified prefix sample
- F8:DA:0C, AC:D1:B8 (Hon Hai Precision Ind.); EC:01:E2 (Foxconn NanJing); 98:E7:9A (Foxconn) [Confirmed] — maclookup.app, rst.im
- Special note
- The archetypal "OUI identifies the contract manufacturer, not the brand" case. FIT (FIT Hon Teng) acquired Belkin International (Belkin/Linksys/Wemo/Phyn) — announced 2018-03-26, ~US$866M, closed Sep 2018. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Belkin, Linksys, Wemo, Phyn (via FIT, 2018)
- Analyst note
- Treat a Foxconn/Hon Hai OUI as "assembled by Foxconn for someone" — classify the device by DHCP hostname, model strings, or traffic behavior, not by the OUI.