Silex Technology, Inc. — 4 prefixes (MA-L)

A MAC address starting with one of Silex Technology's OUI blocks belongs to Silex Technology, Inc., typically seen on embedded Wi-Fi radio modules or wireless device servers rather than end-user consumer electronics. Silex is a Kyoto, Japan-based company that holds three separate IEEE MA-L blocks directly, plus a fourth held by its US subsidiary, Silex Technology America.

Holding four independent full OUI assignments across one corporate family is itself a strong signal of company substance — this is not a bare single-block registration with no findable context. Silex's own site describes roughly 50 years of operation and a current product line spanning Wi-Fi 5/6/6E/7 embedded modules and standalone wireless device servers that bridge USB or serial hardware (printers, scanners, cameras) onto Wi-Fi or Ethernet networks.

Typical deployment contexts include OEM integration into medical devices, factory-automation and robotics equipment, and document-imaging or display products, plus retail-sold standalone device-server hardware such as the SD-330AC, DS-520AN, and SX-PCEAX product lines. Two other, unrelated companies also contain "Silex" in the IEEE registries and must not be conflated with this vendor: Silex Inside (Belgium), whose block is a sub-allocation carved out of the shared IEEE base 70:B3:D5, and Silex Ipari Automatizálási Zrt. (Hungary), an unrelated industrial-automation firm. A malware family named "Silex" (2019, IoT-bricking) is also unrelated and is a naming coincidence, not a security fact about this vendor.

Separately, Silex Technology's own hardware has a documented, currently-relevant security history: CISA advisory ICSA-26-111-10 (2026-04-21) disclosed 13 vulnerabilities in the SD-330AC wireless serial device server and its AMC Manager software, including an unauthenticated remote-code-execution flaw (CVE-2026-32956, CVSS 9.8 Critical) and authentication-bypass issues. Fixed firmware/software versions are available.

IEEE assignment (JP)

the IEEE MA-L registry 1CBCEC, the IEEE MA-L registry 008092, the IEEE MA-L registry 84253F → "silex technology, Inc." / "Silex Technology, Inc.", Kyoto, Japan [Confirmed] — IEEE the IEEE MA-L registry

IEEE assignment (US subsidiary)

the IEEE MA-L registry 004017 → "Silex Technology America", 157 West 7065 South, Salt Lake City, UT 84047, US [Confirmed] — IEEE the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI); 4 prefixes total across the corporate family [Confirmed] — IEEE OUI registry

HQ / country

2-3-1 Hikaridai, Seika-cho, Souraku-gun, Kyoto, JP 619-0237 [Confirmed] — the IEEE MA-L registry 008092, 1CBCEC, 84253F

Company status

active [Confirmed] — silextechnology.com

Device types

embedded Wi-Fi modules (Wi-Fi 5/6/6E/7), wireless device servers/bridges [Confirmed] — silextechnology.com/connectivity-solutions/embedded-wireless

Notable products

SD-330AC, DS-520AN, SX-PCEAX wireless device server lines [Confirmed] — insight.com; silextechnology.com/unwired product announcement

Verified sample prefixes (all MA-L)

00:80:92, 1C:BC:EC, 84:25:3F, 00:40:17 [Confirmed] — IEEE the IEEE MA-L registry

Registration dates

none published — IEEE the IEEE MA-L registry has no date column; any third-party "date registered" for these prefixes is a database artifact, not an IEEE fact [Unknown] — the IEEE MA-L registry

Related-but-distinct entities (do NOT conflate)

Silex Inside (Belgium, the IEEE MA-S registry key 70B3D53BA, a /36 sub-allocation of the shared IEEE base 70:B3:D5:3B:A — that base is administered by IEEE and sub-allocated to thousands of unrelated registrants, not owned by any single vendor); Silex Ipari Automatizálási Zrt. (Hungary, the IEEE MA-M registry key 54083BA, unrelated industrial-automation company)

[Confirmed] — the IEEE MA-S registry, the IEEE MA-M registry

Security note

CISA ICSA-26-111-10 (2026-04-21) — 13 vulnerabilities in SD-330AC firmware ≤1.42 and AMC Manager ≤5.0.2, including CVE-2026-32956 (unauthenticated RCE, CVSS 9.8 Critical, published 2026-04-20) and authentication-bypass CVEs; fixed in SD-330AC firmware v1.50+ and AMC Manager v5.1.0+

[Confirmed] — nvd.nist.gov/vuln/detail/CVE-2026-32956 (cisa.gov itself returns 403 to automated fetch)

Analyst note

A MAC in one of Silex Technology's four blocks identifies genuine Silex hardware (embedded Wi-Fi module or wireless device server); it does not indicate anything about Silex Inside or Silex Ipari Automatizálási Zrt., which are unrelated companies despite the shared name, and the 70:B3:D5 base those two never touch is itself a shared IEEE-administered range, not owned by any one vendor.