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Guides

Network Tools

Ping, check, analyze

Network diagnostics and developer tools. Some run entirely in your browser (subnet math, JWT decoding, password strength); others query public APIs (Cloudflare DoH, RDAP, certificate logs) when they need real internet data. No accounts. See /methodology/ for the per-tool breakdown.

Network

Security

Speed & Uptime

Calculators

More tools coming soon

DNS lookup, port scanner, SSL checker, HTTP headers, and more.