MitraStar holds 20 MA-L blocks (about 335.5 million addresses) registered as "MitraStar Technology Corp." at No. 6, Innovation Road II, Hsinchu, Taiwan. Verified samples include 0C:4C:39, E4:AB:89, 84:0B:BB, 84:AA:9C, C0:3D:D9, and AC:C6:62. These OUIs appear on DSL/fiber/cable gateways, GPON/XGS-PON ONTs, routers, and set-top boxes — frequently carrier-branded. On corporate history: ZyXEL Communications spun off its ODM business unit as an independent company, MitraStar Technology, effective 2011-01-01 (following the ZyXEL/Unizyx board decision of 2010-10-15), as a wholly owned subsidiary of parent Unizyx Holding Corp — so Zyxel and MitraStar are sibling companies under Unizyx (Zyxel = branding, MitraStar = ODM/contract manufacturing). The key analyst point combines the ODM "OUI ≠ brand" pattern with the ISP-supplied-gear angle: a MitraStar OUI typically identifies ISP-supplied CPE, like Sercomm, Arcadyan, Askey, and Gemtek. For triage, a MitraStar OUI on a home or SMB network almost always means an ISP-provided gateway or ONT — classify it as carrier CPE, since the ISP's logo on the box does not change the manufacturer signal.
- IEEE assignment
- 20 prefixes → "MitraStar Technology Corp.", registered Hsinchu, Taiwan [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L; 20 blocks (~335.5M addresses) [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- No. 6, Innovation Road II, Hsinchu 300, Taiwan [Confirmed] — maclookup.app
- Company status
- active; ZyXEL spun off its ODM unit as MitraStar Technology effective 2011-01-01 (board decision 2010-10-15), a wholly owned subsidiary of Unizyx Holding Corp [Confirmed] — DigiTimes
- Device types
- DSL/fiber/cable gateways, GPON/XGS-PON ONTs, routers, set-top boxes — frequently carrier-branded [Confirmed] — maclookup.app, asmag.com
- Notable products
- ISP-supplied gateways/ONTs/routers/STBs
- Verified prefix sample
- 0C:4C:39, E4:AB:89, 84:0B:BB, 84:AA:9C, C0:3D:D9, AC:C6:62 [Confirmed] — maclookup.app
- Special note
- ODM "OUI ≠ brand" + ISP-supplied-gear angle — a MitraStar OUI typically identifies ISP-supplied CPE (like Sercomm/Arcadyan/Askey/Gemtek). Zyxel and MitraStar are sibling companies under Unizyx (Zyxel = branding, MitraStar = ODM). The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Zyxel (sibling), Unizyx (parent), Sercomm/Arcadyan/Askey/Gemtek (CPE-ODM peers)
- Analyst note
- A MitraStar OUI on a home/SMB network almost always means an ISP-provided gateway or ONT — classify as carrier CPE; the ISP's logo on the box does not change the manufacturer signal.