> For the complete documentation index, see [llms.txt](https://doc.thordata.com/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.thordata.com/doc/faq/product-problem/isp-proxies/how-fast-and-stable-are-they.md).

# How fast and stable are they?

ThorData lists **99.9% / 99.99% uptime** for its ISP proxy service and highlights direct ISP connections plus dedicated infrastructure for low latency and high speed. Real-world performance still depends on the target site, location, concurrency, and request strategy.