How long do free proxies live?

Anyone who has scraped a free proxy list knows the frustration: half the entries are dead by the time you use them. That is not bad luck — it is the nature of free public proxies. They are ephemeral by design, because the very reasons an IP becomes an open proxy are the same reasons it stops being one. Rather than quote a single fabricated "average lifespan", it is more useful to understand the forces that kill them, because those forces tell you how to work with the churn instead of fighting it.

Broadly, free proxies fall into two buckets: misconfigured servers that were never meant to be open, and deliberately open relays. Both are unstable, for different reasons.

Several forces shorten a free proxy's life. Misconfiguration gets fixed: many open proxies are accidents — a Squid or router left exposed — and the moment the owner notices the load or the bill, they close it. Overload: a working free proxy is quickly found by thousands of users and scrapers, saturates its bandwidth, and either crashes or is throttled. Blocklisting: heavy shared abuse lands the IP on reputation block-lists, so it stops working for the destinations people actually want. Dynamic IPs: home and small-business connections rotate addresses, so the proxy's IP simply changes. Abuse response: hosts kill relays that attract complaints.

The proxies that last longest tend to be the least useful: obscure, slow, or in regions few people target, so they attract less load and less abuse. The fast, well-located ones burn out first precisely because everyone finds them.

A resilient client needs repeated checks: check each candidate and record successes as well as failures. Our free proxy list shows recorded check results. The catalogue retains historical records, including entries marked as not working. A recorded success does not guarantee a connection now. Review the status and timestamp, then validate an endpoint before use.

Use timeouts, retries and health checks. Remember: stable does not mean guaranteed future availability. Related options: paid proxies and dedicated IP. Further reading: the state of free proxies.