Accutech Ultrasystems Co., Ltd. — 00:18:ED (MA-L)

The MA-L block 00:18:ED is registered to Accutech Ultrasystems Co., Ltd., listed in IEEE's registry at 11F-4, No. 150, in Chung-Ho City, Taipei Hsien, Taiwan (postal code 235) — an address typical of Taiwanese contract electronics manufacturers in the greater Taipei metro area. The registration is not a bare shell: independent web sources place the OUI on genuine networked hardware, the "Gobi7" and "Gobi8" Sun Ray-compatible ultra-thin-client laptops, built around an AMD Au1550 MIPS core (or an Intel XScale IXP425 variant) with onboard Atheros AR2316A 802.11b/g Wi-Fi and a built-in hardware VPN module; the Gobi8 additionally carries HSDPA/UMTS mobile broadband. A 2008 ImportGenius trade record documents an export shipment described as a "Sun Ray compatible thin client," corroborating that Accutech actually shipped networked devices rather than only registering a block that never shipped product. A 2023 technical teardown (oldvcr.blogspot.com) describes the units in detail, including a documented hardware quirk where the onboard VPN board intermittently emits phantom internal 192.168.100.x addresses that can confuse network diagnostics — an operational quirk of the hardware, not a security vulnerability. No CVEs, default-credential lists, or abuse/blocklist reports surfaced for this OUI or company in this pass. maclookup.app shows a third-party "registered 09 July 2006 / updated 17 November 2015" date; IEEE itself publishes no such date for MA-L assignments, so that figure is recorded here only as a database artifact, never as an IEEE fact.

IEEE assignment

00:18:ED → Accutech Ultrasystems Co., Ltd. [Confirmed] — the IEEE MA-L registry (cross-referenced the Wireshark manufacturer database)

Registry / block size

MA-L (24-bit OUI) [Confirmed] — the IEEE MA-L registry

Registry address

11F-4, No. 150, Chung-Ho City, Taipei Hsien, TW 235 (reproduced verbatim from the CSV; the trailing space in the source is likely a truncated street-line artifact, not something added here) [Confirmed] — the IEEE MA-L registry

OUI count for this registrant

exactly one block (00:18:ED); no "Accutech" match found in MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry

No IEEE registration date

IEEE publishes no assignment/registration date for OUI/MA-L entries; maclookup.app's "registered 09 July 2006 / updated 17 November 2015" is a third-party database artifact, not an IEEE fact [Confirmed] — the IEEE MA-L registry, https://maclookup.app/vendors/accutech-ultrasystems-co-ltd

Company identity

Accutech Ultrasystems Co., Ltd., a Taiwan-based (Chung-Ho City, Taipei Hsien) electronics manufacturer/exporter [Likely] — https://www.importgenius.com/suppliers/accutech-ultrasystems-co-ltd

Company status

Unknown — no current corporate website or independent activity confirmation surfaced in this pass [Unknown]

Device types

Sun Ray-compatible ultra-thin-client computers/laptops (Gobi7, Gobi8) with an internal networked RISC subsystem (AMD Au1550 MIPS or Intel XScale IXP425), Atheros AR2316A 802.11b/g Wi-Fi, and a built-in hardware VPN module; Gobi8 adds HSDPA/UMTS mobile broadband

[Likely] — http://oldvcr.blogspot.com/2023/04/of-sun-ray-laptops-mips-and-getting.html

Notable products

Gobi7, Gobi8 ultra-thin-client laptops (resold in the UK by Aimtec) [Likely] — http://oldvcr.blogspot.com/2023/04/of-sun-ray-laptops-mips-and-getting.html

Trade record corroboration

2008 export shipment logged as a "Sun Ray compatible thin client" [Likely] — https://www.importgenius.com/suppliers/accutech-ultrasystems-co-ltd

Security posture

no CVEs, default-credential lists, or abuse/blocklist reports found for this OUI or company; the one documented issue is a hardware quirk (not a vulnerability) where the onboard VPN board occasionally emits phantom internal 192.168.100.x addresses that can disrupt connectivity

[Likely] — http://oldvcr.blogspot.com/2023/04/of-sun-ray-laptops-mips-and-getting.html

Substance verdict

SUBSTANTIVE — identifiable company with documented product/device context (Gobi7/Gobi8 thin-client laptops) and a corroborating 2008 trade-shipment record beyond the bare IEEE registration; not a single-OUI shell [Likely] — https://www.importgenius.com/suppliers/accutech-ultrasystems-co-ltd, http://oldvcr.blogspot.com/2023/04/of-sun-ray-laptops-mips-and-getting.html

Analyst note

a globally-administered MAC starting 00:18:ED plausibly identifies Accutech Ultrasystems thin-client hardware; the vendor holds a single OUI, so no multi-block consolidation applies.