Shenzhen SDMC Technology Co., Ltd. — 9 prefixes (MA-L)

Shenzhen SDMC Technology Co., Ltd. holds nine MA-L (24-bit OUI) blocks registered to variants of its name — the IEEE registry carries both the clean "Shenzhen SDMC Technology CO.,Ltd." and the garbled filing "Shenzhen SDMC Technology CP,.LTD", a common artifact of how OUI organization-name fields are transcribed. Founded in 2003 and headquartered in Nanshan District, Shenzhen, SDMC is a streaming-and-broadband device maker whose hardware draws on these allocations: OTT/IPTV set-top boxes, DVB hybrid and Android TV boxes, GPON/XGS-PON optical network terminals (ONTs), DOCSIS cable modems, Wi-Fi 6/7 mesh routers, IP cameras, and HDMI dongles. The company sells primarily to telecom operators and retail brands and is publicly listed on the Hong Kong Stock Exchange. For asset-classification work, one of these OUIs on a globally-administered address reliably points to an SDMC-built device — frequently an operator-supplied set-top box or broadband CPE — but treat any such device as an untrusted IoT endpoint: Android-based set-top boxes and IPTV hardware are a broadly documented attack surface, and no SDMC-specific CVE either clears or condemns these units.

IEEE assignment

9 prefixes → Shenzhen SDMC Technology Co., Ltd. (also filed as "Shenzhen SDMC Technology CP,.LTD"), Shenzhen, Guangdong, CN [Confirmed] — IEEE MA-L (cached oui.csv lines 401, 7660, 14635, 22766, 24066, 31720, 32063, 38277, 39112)

Registry / block size

MA-L (24-bit OUI), 9 blocks [Confirmed] — IEEE MA-L (oui.csv). No MA-M (mam.csv) or MA-S/OUI-36 (oui36.csv) blocks found. NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools such as maclookup.app is a database artifact, not an IEEE fact.

HQ / country

Nanshan District, Shenzhen, Guangdong, CN [Confirmed] — baike.baidu.com/en/item/SDMC/666981, en.sdmctech.com. Registry addresses on file include Room 1022, Floor 10, Building A, Customs Building, No. 2 Xin'an 3rd Road, Bao'an District, Shenzhen 518101; and 19/F, Changhong Science & Technology Mansion, No.18 Keji South 12th Road, Nanshan District, Shenzhen 518027 [Confirmed] — IEEE MA-L

Company status

active; founded 2003 [Confirmed] — en.sdmctech.com/about/about-us.html, baike.baidu.com/en/item/SDMC/666981

Stock listing

publicly listed on Hong Kong Stock Exchange (HKEX: 00901) [Likely] — en.sdmctech.com/about/about-us.html (single vendor-site source; HKEX ticker not independently confirmed this pass)

Device types

OTT/IPTV set-top boxes, DVB hybrid set-top boxes, Android TV boxes, GPON/XGS-PON ONTs, DOCSIS cable modems, Wi-Fi 6/7 mesh routers, IP cameras, HDMI dongles, projectors [Confirmed] — en.sdmctech.com/products/products-center.html

Notable products

operator-grade and retail streaming + home-networking CPE; DRM support (Verimatrix, PlayReady, Widevine) advertised on OTT boxes [Confirmed] — en.sdmctech.com/news/product-news_1648.html

Primary use case

telecom-operator and retail streaming / broadband CPE; vendor claims 300+ customers across 80+ countries [Likely] — en.sdmctech.com/about/about-us.html, baike.baidu.com (vendor/encyclopedia self-reported reach figures)

Verified sample prefixes (all MA-L)

B4:9D:FD, E4:FA:E4, B0:B3:69, 98:C9:BE, B4:E2:65, 5C:7B:5C, FC:D5:D9, 2C:EC:F7, 04:5F:A6 [Confirmed] — IEEE MA-L (oui.csv)

Allocated date

Unknown — IEEE publishes no registration dates in its public MA-L registry CSV; third-party "date registered" values are database artifacts and are NOT recorded here. This is an OUI vendor, not an ASN, so no RIR/RDAP allocation date applies. [Confirmed] — IEEE oui.csv schema

Security context

no SDMC-specific CVEs or public advisories found this pass. General class risk applies — Android set-top boxes and IPTV devices are a documented attack surface (pre-rooted firmware, third-party app stores, malware-embedded firmware in some operator deployments). Treat as untrusted IoT endpoints. [Likely] — troypoint.com/android-tv-box-malware/, researchgate.net/publication/374473656

Analyst note

a globally-administered SDMC OUI identifies genuine SDMC hardware (typically operator STB or broadband CPE); segment these devices off trusted networks per standard IoT practice.