About NetCheck

A public demo workbench

NetCheck is a synthetic evaluation environment with a publicly accessible diagnostic workflow. No registration, login, or browser session is needed.

No external infrastructure

The service never resolves submitted hostnames, sends probe packets, or invokes shell commands. Only the three listed fixtures are supported.

No saved user data

Inputs are processed for the current response only. There are no accounts, persisted diagnostics, or session cookies. Do not submit real personal information.