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Dev.to
Dev.to
7/25/2026
Your proxy connected. That doesn't mean it hid your IP.

Your proxy connected. That doesn't mean it hid your IP.

Short summary

A practical guide to properly evaluating proxy anonymity beyond simple connection checks, covering how proxies can leak your real IP via X-Forwarded-For headers or reveal themselves through Via headers. Includes Python code using httpx to grade proxies as transparent, anonymous, or elite, plus a CLI tool called proxyprobe for batch testing. The article emphasizes safe degradation when baseline checks fail.

  • Proxies can connect successfully but still leak your real IP via headers like X-Forwarded-For
  • Python code grades proxies as transparent, anonymous, or elite based on what the destination server sees
  • Includes proxyprobe CLI tool for batch testing with geo-checking support

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