32 Banned Chips: Blackwell Ultra Units Detected in China Telecom Network

The tension between strict U.S. export controls and the persistent demand for high-performance computing hardware has surfaced again in a new audit of Chinese infrastructure. Israeli security firm Lava reported that it detected 32 Nvidia Blackwell Ultra B300 chips within the network of China Telecom, a state-owned provider. The presence of these units is significant because the B300 is currently barred from export to China. This finding raises immediate questions about how restricted hardware bypassed regulatory barriers to enter a major state data center.

The numbers behind the discovery highlight the scale of the oversight. Lava identified the 32 specific chips using Nvidia’s own DCGM Exporter tool, a software utility designed for data center operators to monitor server health and performance. While this tool is intended for internal use, it can often be accessed from outside the local network and does not always require password authentication. This vulnerability allowed Lava to pinpoint the hardware’s location within China Telecom’s server racks, although the exact physical placement within the company’s broader network remains unconfirmed.

Nvidia responded to the report with a measured but firm stance. The company did not deny the findings but characterized the incident as insignificant in the grand scheme of global compute resources. A spokesperson stated that recent court cases have shown that the diversion of controlled U.S. products is less than one-half of one percent of the total. The firm noted that with tens of millions of GPUs already in service in approved countries, this specific smuggling case is a drop in the bucket compared to the massive domestic compute capacity China already possesses.

The B300 chip is a highly sought-after asset in the current market. Announced in March of last year, the data center GPU offers substantial performance gains, including 50% more memory and FP4 compute capability than its predecessor, the B200. Nvidia originally positioned the chip as built for the age of reasoning, citing its utility for sophisticated AI models. Although it was expected to ship by the end of 2025, it quickly became a target for illicit trade. In August 2026, nine individuals in Taiwan were indicted for the illegal export of these units, a move that followed Supermicro’s dismissal of several employees after an internal investigation into smuggling activities.

The stakes for both sides of the Pacific remain high as the enforcement gap persists. The smuggling process often involves complex intermediaries, such as Flying Tiget Tech, a Taiwanese server trading firm with whitelisted status that was implicated in recent cases. The demand for these chips is so intense that even older silicon, like the five-year-old A100 servers, has seen prices triple to as much as $82,000. This scarcity drives some operators to retool gaming GPUs for AI workloads, illustrating just how vital Nvidia’s hardware has become to the global AI infrastructure despite ongoing regulatory crackdowns.

For now, the discovery serves as a reminder that while export controls are a primary tool for managing technological advantage, they are not an impenetrable wall. The identification of these 32 chips in China Telecom’s network underscores the continuous effort by both buyers and regulators to navigate the complex landscape of global semiconductor trade.