NVIDIA Corporation — 7 prefixes (MA-L)

NVIDIA holds seven MA-L (24-bit OUI) blocks in the IEEE registry, six registered to "NVIDIA Corporation" at 2701 San Tomas Expressway, Santa Clara, CA, and one older block (00:04:4B) registered to the bare name "NVIDIA" at a prior campus address (3535 Monroe St., Santa Clara, CA 95051). Both map to the same legal entity; the address and name variant on the older block predate the move to the current San Tomas Expressway headquarters. Consolidating these into a single vendor entry is more useful than minting seven near-identical per-prefix pages, since they all resolve to one company. In a data-center or enterprise context a globally-administered MAC on one of these OUIs almost certainly identifies an NVIDIA networking adapter — a ConnectX-series Ethernet/InfiniBand NIC or a ConnectX/BlueField SmartNIC/DPU — products that carry meaningful security surface (hardware Root of Trust, in-line IPsec/TLS/MACsec offload, stateful L4 firewalling via Connection Tracking, and zero-trust segmentation on the BlueField line). In a home or small-business context the same OUI pool also covers the NVIDIA SHIELD TV, an Android TV streaming device with Wi-Fi and Ethernet. An important scoping caveat: NVIDIA acquired Mellanox Technologies (deal closed April 27, 2020), and many third-party lookup tools merge Mellanox-origin OUIs into NVIDIA's total, inflating the apparent count to 70+ prefixes. Those blocks remain registered under "Mellanox Technologies" in the IEEE registry and should be tracked as a separate vendor entry — this entry covers only the seven "NVIDIA"/"NVIDIA Corporation" registrant-name blocks.

IEEE assignment

7 prefixes → NVIDIA Corporation (six blocks) and NVIDIA (one older block, 00:04:4B), Santa Clara, CA, US [Confirmed] — the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI, ~16M addresses per block); all 7 blocks are MA-L. No MA-M or MA-S assignments exist for NVIDIA [Confirmed] — the IEEE MA-L registry (the IEEE MA-L registry MA-L only; the IEEE MA-M registry and the IEEE MA-S registry: no hit). NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" shown by third-party tools is a database artifact, not an IEEE fact.

Verified prefixes (all MA-L)

00:04:4B (registrant "NVIDIA", 3535 Monroe St., 95051), 48:B0:2D, 4C:BB:47, AC:3A:E2, 44:49:C0, 74:25:54, 3C:6D:66 (registrant "NVIDIA Corporation", 2701 San Tomas Expressway, 95050) [Confirmed] — the IEEE MA-L registry

HQ / country

2701 San Tomas Expressway, Santa Clara, CA 95050, US (current registry address); 00:04:4B carries the legacy address 3535 Monroe St., Santa Clara, CA 95051 [Confirmed] — the IEEE MA-L registry

Company status

active; publicly traded (NASDAQ: NVDA) [Confirmed] — nvidia.com, sec.gov

Device types

high-speed Ethernet NICs, InfiniBand adapters, SmartNICs/DPUs, and the consumer SHIELD TV (Android TV with Wi-Fi/Ethernet) [Confirmed] — nvidia.com/en-us/networking/ethernet-adapters/, nvidia.custhelp.com (SHIELD TV MAC support article)

Notable products

ConnectX-5/6/7 Ethernet & InfiniBand adapters, ConnectX-6 Dx/Lx SmartNICs, BlueField-2 DPU, NVIDIA SHIELD TV [Confirmed] — nvidia.com/en-us/networking/ethernet-adapters/, nvidianews.nvidia.com (ConnectX-6 Lx secure SmartNIC), blogs.nvidia.com/blog/what-is-a-smartnic/

Industry

semiconductor / networking hardware (data center, HPC, cloud, AI/ML, telco; secondary: consumer media) [Confirmed] — nvidia.com/en-us/networking/ethernet-adapters/, blogs.nvidia.com/blog/what-is-a-smartnic/

Allocated date

Unknown — IEEE publishes no OUI registration dates [Unknown] — the IEEE MA-L registry (no date column)

Related vendors

Mellanox Technologies — acquired by NVIDIA (deal closed April 27, 2020); Mellanox-origin OUIs remain registered under "Mellanox Technologies" in the IEEE registry and are a separate vendor entry [Confirmed] — sec.gov (joint press release), en.wikipedia.org/wiki/Mellanox_Technologies

Security note

NVIDIA SmartNICs/DPUs (ConnectX-6 Lx/Dx, ConnectX-7, BlueField-2) implement hardware-accelerated security — Root of Trust, secure firmware authentication, in-line IPsec/TLS/MACsec offload, stateful L4 firewall (Connection Tracking), and zero-trust segmentation. A SmartNIC runs isolated from the host OS, making it both a security tool and a high-value, hypervisor-bypassing target; supply-chain firmware integrity and secure-boot bypass are the relevant attack classes. No NVIDIA-NIC-specific public CVE dominated this research pass. [Likely] — nvidianews.nvidia.com (secure SmartNIC), blogs.nvidia.com/blog/what-is-a-smartnic/, developer.nvidia.com/blog/choosing-the-best-dpu-based-smartnic/

Analyst note

a globally-administered MAC on an NVIDIA OUI in a data-center/enterprise context almost certainly identifies a ConnectX or BlueField NIC/SmartNIC in a server; in a home/SMB context, SHIELD TV is also plausible. Distinguish from Mellanox-origin prefixes (separate registrant name).

[Confirmed] — nvidia.com/en-us/networking/ethernet-adapters/, nvidia.custhelp.com