ASUSTeK Computer Inc. — 93 prefixes (MA-L)

ASUSTeK Computer Inc. holds 93 MA-L (24-bit OUI) blocks, all registered under the registrant name "ASUSTek COMPUTER INC." in the IEEE database, with the predominant registry address 15 Li-Te Rd., Peitou (Beitou District), Taipei 112, Taiwan. Founded April 2, 1989, ASUS is a major Taiwanese multinational and one of the world's largest PC vendors, which is why a single consolidated vendor entry is far more useful than 93 near-identical per-prefix pages. The 93 MA-L blocks cover roughly 1.6 billion addresses and span the company's broad hardware line: laptops (ZenBook, VivoBook, the ROG gaming family, ProArt, ExpertBook), desktops, motherboards, graphics cards, monitors, and — most relevant to network-asset work — ASUS and ROG Wi-Fi routers and networking gear. A few older IEEE records carry historical address variants ("150 Li-Te Rd." or the Taoyuan / Kwei Shan address) for the same registrant; these are not separate companies. The practical caveat for security and asset teams: ASUS networking products have an active CVE history, concentrated in router firmware and the AiCloud feature, including a CISA-tracked supply-chain incident (the 2019 "ShadowHammer" Live Update backdoor) and multiple 2025 critical router CVEs (CVE-2025-2492, CVE-2025-59366) with confirmed in-the-wild exploitation and large botnet campaigns. An ASUSTeK OUI on a router interface is therefore a useful signal to prioritize firmware-patch and AiCloud-hardening checks.

IEEE assignment

93 prefixes → ASUSTek COMPUTER INC. (registry name), registered Taipei, Taiwan, TW [Confirmed] — IEEE MA-L (cached copy)

Registry / block size

MA-L (24-bit OUI); 93 IEEE prefixes (~1.6B addresses); zero MA-M and zero MA-S entries [Confirmed] — IEEE MA-L / MA-M / MA-S (cached the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry). NOTE: IEEE's public OUI data publishes NO assignment/registration date; the "22 April 1998" figure on third-party tools (maclookup.app) is a database artifact, not an IEEE fact, and must not be displayed as a registration date.

HQ / country

15, Li-Te Rd., Peitou, Taipei 112, Taiwan, TW (registry address); corporate HQ in Beitou District, Taipei, Taiwan [Confirmed] — IEEE MA-L; en.wikipedia.org/wiki/Asus

Address variants

a small number of older IEEE records show "150 Li-Te Rd." or "No.5 Shing Yeh Street, Kwei Shan Hsiang, Taoyuan" — historical address variants for the same registrant, not separate entities [Confirmed] — IEEE MA-L (cached copy)

Company status

active; founded April 2, 1989; among the world's largest PC vendors by unit sales [Confirmed] — asus.com; en.wikipedia.org/wiki/Asus; companieshistory.com/asustek-computer

Device types

laptops (ZenBook, VivoBook, ROG, ProArt, ExpertBook), desktops, motherboards, graphics cards, monitors, Wi-Fi routers and networking gear, tablets, mini PCs, peripherals [Confirmed] — asus.com; en.wikipedia.org/wiki/Asus; netify.ai/resources/macs/brands/asus

Notable products

ROG gaming line; ASUS/ROG routers and networking equipment; motherboards

Website

https://www.asus.com [Confirmed] — en.wikipedia.org/wiki/Asus

Prefix geography

majority of the 93 prefixes registered in Taiwan; at least one prefix (30:85:A9) registered in the United States [Likely] — netify.ai/resources/macs/brands/asus; maclookup.app/vendors/asustek-computer-inc (single-source per-prefix country, not re-confirmed against IEEE raw)

Security note

ASUS router/firmware products have an elevated, active CVE history — 2014 AiCloud leak (FTC 2016 settlement, 20-yr security program); 2019 ShadowHammer Live Update supply-chain backdoor (~0.5–1M devices; re-added to CISA KEV in late 2025); 2025 CVE-2025-2492 (CVSS 9.2, AiCloud auth bypass) and CVE-2025-59366 (CVSS 9.8, AiCloud Samba path-traversal + OS command injection, unauthenticated RCE); large 2025 botnet campaigns (KadNap, Operation WrtHug) targeting AiCloud routers. Mitigation: keep firmware current, disable AiCloud / remote management if unused, change default credentials. [Confirmed for the existence/severity of the advisories; CVE counts/dates as reported by the cited vendors] — thehackernews.com; malwarebytes.com; darkreading.com; fieldeffect.com

Analyst note

an ASUSTeK OUI reliably identifies genuine ASUS hardware on a globally-administered address, but MAC randomization on client devices (Windows/Android Wi-Fi) means absence of an ASUS OUI does not mean "not ASUS." On router interfaces the OUI is a strong cue to prioritize firmware-patch and AiCloud-exposure checks.