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Resource

How our diagnostics work.

Checks execute on launchready.cn infrastructure inside Mainland China — not simulated, not proxied.

  • DNS resolution

    How China resolvers answer for your domain, and how long it takes.

  • HTTP response

    Time to first byte and status from Mainland China nodes.

  • TCP connect

    Raw handshake latency across the border.

  • Ping latency

    Round-trip time and packet loss patterns.

  • Full page fetch

    Which resources load, which stall, and which never arrive.

See diagnostics in action.

Explore Diagnostics