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Diagnostics · DPI & Subscription Checker

Connection, Subscription & DPI (TCP 16–20KB) Diagnostics

Verify your subscription link nodes and test whether your ISP drops TCP connections after 16–20 KB on foreign hosting providers.

  1. Tool 

    Subscription Link Node Inspector

    Paste your subscription link from @OutlineKeysRobot (or click Inspect if you opened this page inside Telegram) to verify that the subscription server responds and see all available locations.

  2. Tool 

    ISP DPI Blocking Test (TCP 16–20KB Method)

    Tests major cloud providers (Cloudflare, Hetzner, OVH, DigitalOcean, Akamai, AWS, Google Cloud, Scaleway) for TCP 16–20KB connection freezing used by TSPU DPI filters. Run this test WITH VPN OFF first, then WITH VPN ON.

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