> DNS/HTTP Tester

DNS/HTTP Tester

Retro network diagnostics

DNS lookup & propagation, HTTP headers, SSL certificates, Ping, Whois and a full domain audit — wrapped in a retro '90s desktop terminal. One tap, real answers, no account.

▶ Download on the App Store ✉ Support 🔒 Privacy

iOS · Web • 16 languages • 2 themes • one-time €1.99 • no trackers

Tools

DNS lookup

A / AAAA / MX / TXT / NS / SOA / SRV / CAA + reverse DNS (PTR) over DoH

Propagation

5-resolver check + "is it down or just me?" verdict

HTTP headers

Status, CORS, security headers, compression, response time

SSL certificate

Issuer, validity & chain via Certificate Transparency + DNSSEC

Fingerprint

CDN / WAF / server / framework + HTTP/2 & HTTP/3 detection

Ping

Latency graph with Geiger-counter sonification

Whois + Geo

Registrar plus hosting country, city, ASN & org

Domain Audit

A–F health score, subdomain discovery, email security

Email security

SPF / DMARC / DKIM / MX + BIMI / MTA-STS / TLS-RPT

Compare

Two domains side by side across every check

Batch check

Run many domains at once and scan the results

Watchlist + trends

Track domains over time; diff IP / status / cert + history graphs & expiry alerts

Widget & Shortcuts

Home-screen widget, Siri App Intents & Safari share extension

Screens

Domain health score screen — Health score

HTTP header & fingerprint screen — HTTP + fingerprint

Whois & hosting location screen — Whois + hosting

DNS propagation / downtime screen — Propagation

Under the hood

StackReact Native · Expo SDK 54 · TypeScript

TargetsiOS · Web (one codebase)

NetworkingPure fetch — public DoH & CT APIs, no native modules

Nav / stateReact Navigation · AsyncStorage persistence

i18n16 languages, English fallback

Design2 themes · CRT effect · generated retro sounds