Signalhouse is a full program that runs in your browser and needs JavaScript. Please enable JavaScript, or use its engine as tools without it:
- HeaderLens – Is a website down? Multi-region status, redirects, TLS and security headers.
- DNS + Certificate Explorer – DNS records, e-mail security, CAA, live TLS certificate and CT history for a domain.
- E-mail Infrastructure Explorer – MX, SPF lookups, DMARC, DKIM, MTA-STS, TLS-RPT and BIMI for a domain, scored with fixes.
- Security Configuration Scanner – Passive, graded check of a domain's TLS, security headers, DNS security and security.txt.
- HTTP Technology Explorer – Headers, compression, caching, HTTP/2-3 hints, redirects, security and tech stack for a URL.
- CDN Behaviour Explorer – Which CDN serves a URL, whether it caches it (HIT/MISS, Age, TTL) and how, from two requests.
- IPv6 Readiness Explorer – Is a domain reachable over IPv6? Web, DNS and mail checks, address classes and a scored report.
- Global DNS Explorer – Ask every authoritative name server and public resolvers: records, propagation, DNSSEC, mistakes.
- Certificate Transparency Explorer – Every logged certificate for a domain: history, issuers, subdomains, wildcards and expiry.
- Domain History Graph – Registration, DNS, hosting networks, certificates and Wayback captures of a domain as a timeline.
- BGP Route Explorer – Who announces an IP or prefix in BGP: origin ASes, RPKI validity, visibility and origin changes.
- ASN Relationship Explorer – An autonomous system at a glance: holder, country, BGP neighbours and announced prefixes.
- Internet Outage Atlas – Correlate public outage signals (IODA, RIPEstat BGP, live probe) for a country, ASN or domain.
- AI Website Readiness Explorer – Can ChatGPT, Claude, Perplexity and AI agents read your website? Explainable score.
- Accessibility Snapshot – Static WCAG 2.2 snapshot of a page: findings by severity, evidence and manual checks.
- Website Change Explainer – Compare two versions of a page and see which changes matter: prices, terms, dates, links.
- Scam Signal Checker – Check a message or link for common scam and phishing warning signs — without clicking.
- Browser Compatibility Checker – Which browsers support a CSS property, JS API or HTML element? MDN data + Baseline status.
- Network Speed Tester – Measure latency, jitter, download and upload speed between your browser and our server.
- Explorer of Everything – Search transactions, contracts, domains, packages, advisories, MCP servers and websites in one box.
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Signalhouse
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