The OUI 04:2B:58 is registered to Shenzhen Hanzsung Technology Co., Ltd., a Shenzhen-based industrial computing manufacturer that builds firewall motherboards, multi-LAN firewall PCs, fanless embedded computers, panel PCs, and rack-mounted industrial systems, much of it sold OEM/ODM under the YENTEK brand. The registry address places the company in Longhua New District, Shenzhen, Guangdong, and its product line skews heavily toward network-security appliances: Mini-ITX and ATX boards carrying four, six, or eight LAN ports, designed to be dropped into perimeter firewalls, gateways, and ICS/edge deployments. Because Hanzsung is a hardware-only manufacturer rather than a consumer brand, this OUI appearing in a network scan most often indicates an industrial firewall platform, embedded router, or multi-port security appliance rather than an end-user device. The company is an Intel IoT Solutions Alliance partner. As with all OUI assignments, IEEE publishes no registration date for this block, so allocated_date is intentionally null rather than guessed; no IANA reference applies to OUI entries. No CVEs or public vulnerability disclosures were found for Hanzsung or YENTEK products as of June 2026, though standard supply-chain caution applies to any Shenzhen-built networking hardware deployed at a network perimeter.
- IEEE assignment
- 04:2B:58 → Shenzhen Hanzsung Technology Co.,Ltd, MA-L block [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 815)
- Registry / block size
- MA-L (24-bit OUI) [Confirmed] — IEEE oui.csv. NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party MAC-lookup tools is a database artifact, not an IEEE fact. No IANA reference applies to OUI entries.
- Registered address
- 8F, Bldg 3, Guole Technopark, Western Huaning Rd, Dalang, Longhua New District, Shenzhen, Guangdong, CN 518109 [Confirmed] — IEEE oui.csv
- Company / country
- Shenzhen Hanzsung Technology Co., Ltd., Shenzhen, Guangdong, China [Confirmed] — hanzsung.com/about.html
- Company status
- active [Confirmed] — hanzsung.com (site operational)
- Device types
- industrial motherboards (Mini-ITX, ATX, firewall-class boards with 4/6/8 LAN ports), fanless embedded PCs, firewall appliances, panel PCs, rack-mounted industrial computers, NUC/mini PCs [Confirmed] — hanzsung.com/about.html, hanzsung.com/Firewall-Motherboard/, hanzsung.com/Firewall-PC/
- Typical deployment
- network security gateways, industrial automation, AI edge computing, cloud servers, smart transportation; OEM/ODM integration rather than direct consumer sale [Confirmed] — hanzsung.com/Application/Network-Security.html
- Brand aliases
- YENTEK (OEM/trade-show brand); both YENTEK and Hanzsung trace to Shenzhen Hanzsung Technology Co., Ltd. [Confirmed] — embedded-world.de exhibitor listing, hanzsung.com/about.html
- Industry partnerships
- Intel IoT Solutions Alliance partner [Likely] — intel.com partner showcase, hanzsung.com/about.html
- Founding year
- early 2000s (about page cites ~25 years OEM/ODM experience; third-party sources give 2000/2009/2011 for different entities/rebrands — exact year unverified) [Likely] — hanzsung.com/about.html, made-in-china.com/showroom/hanzsung
- Security context
- no CVEs, NVD entries, or CISA advisories found for Hanzsung/YENTEK as of June 2026; vendor ships firewall and network-security appliances, so this OUI may surface at a network perimeter or in ICS environments. Standard supply-chain caution applies; no specific threat intelligence found. [Confirmed — absence of public disclosures] — hanzsung.com/Firewall-PC/, hanzsung.com/Application/Network-Security.html
- Allocation date
- Unknown — IEEE publishes no OUI registration dates; not an ASN/RIR resource, so no first-party RDAP date applies [Confirmed] — IEEE oui.csv
- Analyst note
- seeing 04:2B:58 on a network strongly suggests an industrial firewall platform, embedded router, or multi-LAN security appliance — not a consumer device.