Codynet is a free, privacy-first suite of browser-based network tools: DNS, DIG, MX, TXT, reverse DNS, a resolver comparison (Cloudflare/Google/Quad9/OpenDNS), TLS and HTTP-header checks, RDAP WHOIS, subnet calculator, and bulk lookups with CSV export. No signup, no query retention — structured output instead of raw dumps, with a plain-English guide on every tool.
