RKN Block Checker

Diagnoses RKN/TSPU internet blocks layer by layer — DNS poisoning, TCP reset, TLS DPI, or ISP stub pages.

Desktopfreeglobal

A small command-line diagnostic that identifies whether a connection is subject to RKN/TSPU blocking and which network layer is responsible — DNS poisoning, TCP reset, TLS SNI inspection, or ISP stub pages. It automates layer-by-layer probing for researchers and users in censored regions, runs self-hosted with no configuration, and is available as a free, open-source (MIT) tool.

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