Free Tools

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.