Dev.to
7/25/2026

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
Generated with AI, which can make mistakes.
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