Proxy diagnostics

Proxy Checker

Check proxy nodes by testing IP changes, DNS behavior, latency, protocol support, WebRTC exposure, and whether the route works in real apps.

Updated: 2026-05-11

Get free test nodes

Direct Answer

A proxy checker should confirm more than connection status. Verify visible IP, DNS behavior, protocol support, and real browsing before trusting a node.

Check protocol support

VMess, VLESS, Trojan, Shadowsocks, and SSR require compatible clients and correct import formats.

Validate real traffic

A node can pass latency but fail real browsing, DNS, or app traffic.

Keep expectations realistic

Free proxy nodes expire often and should be treated as temporary test routes.

Steps

Import the node or subscription.
Run latency and real webpage tests.
Check IP, DNS, and WebRTC.
Keep only nodes that pass repeated checks.

Checklist

Protocol matches the client.
IP changes as expected.
DNS is not leaking to the original network.
Real webpages load consistently.

Troubleshooting

Latency passes but websites fail

Check DNS, route mode, and whether the node blocks some traffic.

Node imports incorrectly

Confirm the client supports the protocol and subscription format.

All free nodes fail

Refresh later or compare a VPN trial for stability.

Free Clash nodes Clash node testing workflow. Clash subscription Import and test V2Ray subscriptions. IP leak test Check the visible public IP. DNS leak test Check resolver exposure.

FAQ

Is latency enough to judge a proxy?

No. Test real traffic, DNS, and WebRTC too.

Why do free proxies expire quickly?

They are often overloaded, shared, or temporary. Treat them as test resources.

Which client should I use?

Use Clash for rule-based routing and V2RayN/Nekoray for direct V2Ray-style workflows.