Proxy Tester
The proxy tester runs a deeper diagnostic for developers, account teams, and operators who need to trust one proxy before using it. It checks connectivity, anonymity signals, DNS routing, IP reputation, and latency, then returns pass or fail results that show whether the endpoint is suitable for sensitive workflows.
A proxy tester is useful when you have a list of endpoints and need to filter out the ones that are not ready for real work. Check response, location, latency, and authentication errors before handing the proxy list to a production tool. That way dead, mislabeled, or slow connections are removed during testing instead of causing failed jobs later.
Run the result against the exact browser, device, proxy protocol, and target country you plan to use in production. A clean result here is not a ranking promise, but it catches the configuration mistakes that usually create blocked sessions, wrong geo signals, DNS leaks, or inconsistent fingerprints.
For repeat workflows, record the visible IP, ASN, DNS route, latency, and warning state before and after each proxy change. That gives QA, scraping, SEO, ads, and account teams a comparable baseline instead of relying on a single one-off check.
When troubleshooting a blocked session or unexpected platform response, work through the stack in order: confirm the port is reachable, verify the exit IP and ASN, check DNS resolver, inspect request headers, and then compare browser fingerprint and timezone. Skipping layers leads to misdiagnosis — a timeout at the port level looks similar to a cookie checkpoint at the application layer but the fix is completely different.
Mobile proxy workflows behave differently from datacenter ones because CGNAT means multiple physical users share the same outbound IP range. Platforms treat these IPs with higher inherent trust, but that trust can erode if the same session triggers unusual behavior like very high request rates, mismatched timezones, or browser fingerprints that do not match a real mobile device. Use these diagnostic tools to verify the whole configuration, not just the IP.
practical proxy analysis with 14 tests covering connectivity, security, DNS routing, and performance.
Connectivity
4
tests
Security
4
tests
Performance
3
tests
Advanced
3
tests
Formats: host:port host:port:user:pass socks5://host:port:user:pass
Need a Better Proxy?
Proxy Poland mobile 4G/5G proxies pass all 14 tests. Real LTE 4G/5G SIM cards, low latency, full SOCKS5 support.
14 practical Tests
Our suite covers connectivity (HTTP/HTTPS), security (anonymity, DNS routing, IP reputation), performance (3x latency), and advanced protocol detection.
SOCKS5 vs HTTP Proxies
HTTP proxies handle TCP traffic only. SOCKS5 proxies support any protocol including UDP, making them better for gaming, streaming, and P2P applications.
What is DNS Routing?
A secure proxy should route all DNS requests through its exit node. If DNS bypasses the proxy, your browsing history is visible to your ISP.
IP Reputation Check
We check your proxy's exit IP against IPGuardian's blacklist database. Clean IPs (not on blocklists) are less likely to be blocked by target websites.
Frequently asked questions
Everything operators ask before they trust the proxy with production traffic.
What is a proxy tester?+
A proxy tester checks whether a proxy endpoint is alive, what protocol it accepts, how fast it responds, and what IP / country / ASN it exits from. Use it to verify a proxy actually works before you wire it into a scraper, browser, or automation tool.
Does the tool support HTTP, HTTPS, and SOCKS5?+
Yes. Paste the proxy in `host:port:user:pass` form (or just `host:port` if anonymous) and the tester probes HTTP, HTTPS, and SOCKS5 in parallel. The result row tells you which protocols answered and which timed out.
Why does my proxy show as dead even though it works in my code?+
Most common reasons: the proxy expects a different protocol than the one tested, your auth credentials are wrong, the proxy whitelists IPs and the tester runs from a different egress, or the target host blocks the tester's user-agent. Check the protocol column and try a different test target.
Where does the proxy tester run from?+
The check runs server-side from Proxy Poland infrastructure (Polish carrier IP). That means the proxy you test sees a real client, not your browser, and you don't have to expose your own IP to the proxy you are auditing.
Is my proxy data stored after the test?+
No. Test inputs are processed in memory and discarded. We do not log proxy hostnames, ports, credentials, or test results to disk. Each test is one-off.
Can I test mobile 4G/5G proxies with this?+
Yes — the tester does not care whether the upstream proxy is mobile, datacenter, or residential. For Proxy Poland mobile proxies, point the tester at the host:port you got in your dashboard and you should see Polish carrier ASN (Orange, T-Mobile, Plus, or Play) in the result.
How is latency measured?+
Round-trip time from our test server through your proxy to a known endpoint. We use a small, cacheable resource so we measure connection + protocol overhead, not download time. Typical mobile proxy: 30–80 ms RTT inside the EU.
What does anonymity level mean?+
We probe whether the proxy forwards `X-Forwarded-For`, `Via`, or other headers that leak the original client IP. "Elite" = no leakage; "Anonymous" = identifies as proxy but hides client IP; "Transparent" = forwards your IP. Mobile proxies are typically Elite by default.
Can I batch-test a list of proxies?+
Paste up to 50 proxies separated by newlines and the tester runs them concurrently. Bigger batches: use the same logic via `/api/proxy-tester` from your own scripts.
Does the tester check Cloudflare or Akamai behavior?+
Indirectly. The tester verifies the proxy answers — it doesn't simulate every anti-bot vendor. For Cloudflare/Akamai-specific testing, run your real workload through the proxy. Mobile carrier IPs typically pass anti-bot checks that flag datacenter or residential pool IPs.
Why does the result show a different country than expected?+
Two reasons: the proxy may exit through a different upstream than its hostname suggests (chained gateways), or the IP geolocation DB is stale. Mobile carrier IPs in Poland are sometimes flagged as generic EU until carrier ranges are re-classified.
Is testing a proxy I don't own legal?+
Sending a probe HTTP request to a proxy you have access to (your own, your provider's, or one you bought) is normal verification traffic. Mass-probing third-party proxies you do not control crosses into scanning territory and may violate their terms — same rule as any other server.