MAC address vendor

Shenzhen Cultraview Digital Technology Co., Ltd — 4 prefixes (MA-L)

Primary prefix
04:05:DD
Block
MA-L
Status
Active

Summary

// what this is
Shenzhen Cultraview Digital Technology is registered to MAC prefix 04:05:DD and 3 more in the IEEE OUI database. When a device's MAC address begins with 04:05:DD, that block was registered by Shenzhen Cultraview Digital Technology — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
// analyst note
A Cultraview OUI = an OEM board inside a branded TV or set-top box; classify the endpoint as smart-TV/STB. Firmware-level security is the downstream brand's responsibility, not Cultraview's.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: Medium-High

Shenzhen Cultraview Digital Technology Co., Ltd (深圳市金锐显数码科技有限公司) is a Shenzhen-based B2B original-equipment manufacturer of television mainboards and set-top-box circuit assemblies. Its IEEE registration carries four MA-L blocks — 04:05:DD, 24:D1:A1, A8:2C:3E, and B0:D5:68 — assigned to the Nanshan district headquarters (F6, M6, Maqueling, High-tech park, Nanshan, Shenzhen, Guangdong 518057, CN). A fifth MA-L prefix, B8:3D:4E, belongs to a distinct registrant entry, "Shenzhen Cultraview Digital Technology Co.,Ltd Shanghai Branch" at Zhangjiang Hi-tech Park, and is excluded from this consolidated headquarters entry. The company makes analog, digital/HD (DVB-T LCD/LED), and Android-based smart-TV mainboards, IPTV/OTT set-top-box boards, internet set-top boxes, and Wi-Fi modules, supplying OEM boards to downstream TV brands rather than retail end-user devices under its own name. Because these boards ship inside branded TVs and set-top boxes, a Cultraview OUI on a network typically resolves to a smart TV or STB endpoint, not a device a user would recognize as "Cultraview." One FCC filing is on record (FCC ID 2AM4L1, 2017-09-13) for a dual-band 2.4/5 GHz Wi-Fi module intended for TV host integration. No CVEs, malware campaigns, or formal security advisories naming Cultraview products were found; the one community-level concern is the Zeasn third-party app store bundled on some Android smart-TV boards, flagged in an Android-debloater issue but not a CVE.

IEEE assignment
4 prefixes → Shenzhen Cultraview Digital Technology Co., Ltd, Nanshan, Shenzhen, CN [Confirmed] — IEEE MA-L
Registry / block size
MA-L (24-bit OUI); 4 IEEE prefixes assigned to the HQ registrant [Confirmed] — IEEE MA-L; no hits in the IEEE MA-M registry (MA-M) or the IEEE MA-S registry (MA-S). NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "registration date" on third-party tools (e.g. maclookup.app) is a database artifact, not an IEEE fact.
HQ / country
F6, M6, Maqueling, High-tech park, Nanshan district, Shenzhen, Guangdong 518057, CN [Confirmed] — IEEE MA-L
Chinese name
深圳市金锐显数码科技有限公司 [Confirmed] — http://www.cultraview.com/en/
Website
http://www.cultraview.com/en/ (domain confirmed via search index; site refused connection at fetch time) [Confirmed] — http://www.cultraview.com/en/
Founded
~2005 [Likely] — third-party company profile (https://www.zoominfo.com/c/shenzhen-cultraview-digital-technology-co-ltd/348620163); not independently verified via official registry
Company status
active [Confirmed] — http://www.cultraview.com/en/, https://fccid.io/2AM4L1
Device types
TV mainboards/PCBA — analog TV boards, digital/HD DVB-T LCD/LED boards, Android smart-TV mainboards, IPTV/OTT set-top-box boards, internet set-top boxes, Wi-Fi modules [Confirmed] — https://fccid.io/2AM4L1, https://fcc.report/company/Shenzhen-Cultraview-Digital-Technology-Co-L-T-D, https://www.alibaba.com/showroom/shenzhen-cultraview-digital-technology.html
Business model
B2B OEM board/SoC solution supplier to downstream TV brands (not own-brand retail) [Confirmed] — https://fccid.io/2AM4L1, http://www.cultraview.com/en/
Verified prefixes (all MA-L, HQ registrant)
04:05:DD, 24:D1:A1, A8:2C:3E, B0:D5:68 [Confirmed] — IEEE MA-L / https://maclookup.app/vendors/shenzhen-cultraview-digital-technology-co-ltd
Related registrant (separate entry, excluded)
B8:3D:4E → "Shenzhen Cultraview Digital Technology Co.,Ltd Shanghai Branch", Zhangjiang Hi-tech Park, Shanghai 201203, CN [Confirmed] — IEEE MA-L
FCC filings
FCC ID 2AM4L1, filed 2017-09-13 — dual-band 2.4/5 GHz Wi-Fi module (Part 15 DTS), single modular approval for TV/mobile host platforms [Confirmed] — https://fccid.io/2AM4L1
Market reach
company self-describes as supplying OEM solutions to ~80% of the world's TV manufacturers; ~1,200 employees (400+ R&D); est. revenue ~$271.6M USD [Likely] — third-party (https://www.zoominfo.com/c/shenzhen-cultraview-digital-technology-co-ltd/348620163); self-described figures, not independently verified
Allocated date
Unknown [Unknown] — IEEE publishes no MAC-prefix registration dates; no first-party RIR date applies to OUI entries
Security context
No CVEs, malware campaigns, or formal advisories (NVD/CVE/CISA, FCC Covered List, BIS) found naming Cultraview products. Community concern: the Zeasn third-party app store bundled on some Android smart-TV boards is flagged "not recommended for security reasons" in an Android-debloater issue (community-level, not a CVE). As an OEM board supplier, end-device security depends on the downstream brand's firmware/OTA practices. [Confirmed for absence-of-CVE; community note Confirmed] — https://github.com/Universal-Debloater-Alliance/universal-android-debloater-next-generation/issues/1259, https://fccid.io/2AM4L1
Security risk rating
Low-to-moderate, context-dependent — no published exploits or CVEs; risk is indirect via downstream-brand firmware and the bundled Zeasn store; Cultraview boards appear on networks as smart TVs/STBs, not as named "Cultraview" endpoints
[Likely] — https://github.com/Universal-Debloater-Alliance/universal-android-debloater-next-generation/issues/1259
Analyst note
A Cultraview OUI reliably identifies an OEM board shipped inside a branded TV or set-top box; classify the endpoint as a smart-TV/STB device. Firmware-level security posture is the downstream brand's responsibility, not Cultraview's.
[ 02 ] — OUI prefixes

Assignments by IEEE.

4
// registered prefixes4
  1. 04:05:DDMA-L
  2. 24:D1:A1MA-L
  3. A8:2C:3EMA-L
  4. B0:D5:68MA-L
[ 03 ] — Related

Keep digging.