Aviva Links Inc. holds a single IEEE MA-L block, C4:04:D8, registered to the standalone company at 160 E Tasman Dr, San Jose, CA 95134, US. Aviva Links is a San Jose semiconductor startup (founded 2020) that designs automotive multi-gigabit in-vehicle networking silicon: Ethernet PHYs, Ethernet switches scaling up to 100G, MIPI CSI-2 bridges, zonal aggregators, and ASA-ML SerDes ICs aimed at the software-defined vehicle (SDV). Devices carrying this prefix are automotive-grade ICs embedded in in-vehicle network modules — zonal ECUs, ADAS cameras, sensor hubs, and infotainment gateways — rather than consumer or enterprise networking appliances. If C4:04:D8 turns up on a network scan it most likely indicates an automotive ECU development board, a test bench, or a vehicle-tethered device; general-purpose IT/OT environments would not normally contain this vendor's hardware. The company was acquired by NXP Semiconductors in October 2025 for $242.5M all-cash, and its products are now folded into NXP's automotive networking portfolio, but the OUI was registered under the standalone "Aviva Links Inc." entity before that integration. A standard OUI caveat applies: IEEE publishes no registration date for this or any MAC/OUI block. Third-party lookup tools that show a "first seen" date of 2022-05-24 for C4:04:D8 are reporting a database ingestion artifact, not an IEEE assignment date. Aviva Links' ASA-ML products implement link-layer security (authentication, encryption, integrity) with an integrated ARM CPU supporting secure boot and key management; no public CVEs were found for the vendor's products as of June 2026.
- IEEE assignment
- C4:04:D8 → Aviva Links Inc. [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 525); maclookup.app/vendors/aviva-links-inc
- Registry / block size
- MA-L (24-bit OUI); single block [Confirmed] — IEEE MA-L; maclookup.app. NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); the maclookup.app "first seen" 2022-05-24 is a database artifact, not an IEEE fact.
- HQ / country
- 160 E Tasman Dr, STE 102, San Jose, CA 95134, US (registry address; a LinkedIn-listed suite is Ste 215 at the same building) [Confirmed] — IEEE MA-L; linkedin.com/company/avivalinks
- Company status
- active as a brand; standalone entity acquired by NXP Semiconductors Oct 24, 2025 ($242.5M all-cash) and integrated into NXP's automotive networking portfolio [Confirmed] — nxp.com newsroom; nasdaq.com
- Founded
- 2020 [Confirmed] — linkedin.com/company/avivalinks
- Device types
- automotive multi-gigabit in-vehicle networking silicon — Ethernet PHYs, Ethernet switches (up to 100G), MIPI CSI-2 bridges, zonal aggregators, ASA-ML SerDes ICs; targets SDV/ADAS, sensor-to-processor links, telematics, infotainment, plus robotics/industrial/XR wired connectivity [Confirmed] — avivalinks.com/products, avivalinks.com/ethernet-products
- Notable
- VC-backed SerDes startup (Series A $26.5M, Oct 2021; investors include Marvell founders Weili Dai and Sehat Sutardja). Acquired by NXP for $242.5M, Oct 2025, part of NXP's automotive-connectivity acquisition spree (also TTTech Auto). OUI registered under standalone "Aviva Links Inc." pre-NXP. [Confirmed] — linkedin.com/company/avivalinks; nxp.com newsroom
- Security context
- ASA-ML products implement link-layer authentication, encryption, and integrity per the ASA-ML spec; integrated ARM CPU supports secure boot + key management. No public CVEs found as of June 2026. No IANA Reference applicable — proprietary automotive SerDes/Ethernet silicon vendor, not an IANA-registered protocol entity. [Confirmed] — avivalinks.com/asa-ml-products; signalintegrityjournal.com
- Analyst note
- C4:04:D8 on a globally-administered address identifies automotive-grade Aviva Links / NXP silicon. Observing it most likely means an automotive ECU dev board, test bench, or vehicle-tethered device — not a consumer or enterprise networking appliance. [Likely] — avivalinks.com/about, avivalinks.com/products