{"slug": "chinese-host-on-vast-ai-masquerading-as-us-host", "title": "Chinese host on vast.ai masquerading as US host", "summary": "A user on vast.ai discovered a GPU host masquerading as a US-based machine was actually a Hong Kong host proxying traffic, resulting in slow performance and unusability for AI workloads due to Chinese IP blocks by services like Claude AI.", "body_md": "My regular go-to GPU rental service for ad-hoc ML fine-tuning is vast.ai. It's a marketplace of spare GPU resources, great for non-regular rental.\nInterestingly, for the first time yesterday I encountered a host that appeared to be from the US, but it was actually not.\nIt felt a little slow when I was on it. Turns out it was actually a Hong Kong host, proxying vast.ai traffic from a US.\nChinese hosts are usually cheaper and initially avoided due to very limited international bandwidth. Now it's worse as AI services like @claudeai actively block access from Chinese IPs, which makes the workaround not just slow but quietly unusable for real workloads.", "url": "https://wpnews.pro/news/chinese-host-on-vast-ai-masquerading-as-us-host", "canonical_source": "https://twitter.com/uzyn/status/2071498690414731513", "published_at": "2026-06-29 07:54:39+00:00", "updated_at": "2026-06-29 08:29:05.803237+00:00", "lang": "en", "topics": ["ai-infrastructure", "ai-tools", "ai-startups"], "entities": ["vast.ai", "Claude AI", "Hong Kong", "China"], "alternates": {"html": "https://wpnews.pro/news/chinese-host-on-vast-ai-masquerading-as-us-host", "markdown": "https://wpnews.pro/news/chinese-host-on-vast-ai-masquerading-as-us-host.md", "text": "https://wpnews.pro/news/chinese-host-on-vast-ai-masquerading-as-us-host.txt", "jsonld": "https://wpnews.pro/news/chinese-host-on-vast-ai-masquerading-as-us-host.jsonld"}}