DNS & WHOIS Health Checker
Get a comprehensive analysis of any domain's DNS configuration, nameservers, email security, and more — instantly and for free.
Try: google.com · github.com · cloudflare.com · amazon.com
What we check
| Category | Description | |
|---|---|---|
| 📋 | Domain Registration | Registrar, creation/expiry dates, status flags and DNSSEC from RDAP/WHOIS. |
| 🌐 | DNS Records | A, AAAA, NS, MX, CNAME, SOA, TXT, CAA, SRV, DS and DNSKEY records. |
| 🔗 | Parent Nameservers | TLD delegation, glue records, parent vs authoritative consistency. |
| 🖥️ | Authoritative NS | UDP/TCP reachability, authoritative flag, open recursion, latency. |
| 📄 | SOA Analysis | MNAME, RNAME, serial format, refresh/retry/expire/minimum TTL sanity. |
| 📧 | Mail & MX | MX validity, IP resolution, redundancy, reverse DNS/PTR checks. |
| 🌍 | WWW / Web | A, AAAA, CNAME following with full CNAME chain analysis. |
| 🔒 | DNSSEC | DS, DNSKEY, RRSIG detection and chain-of-trust validation. |
| 🛡️ | Email Security | SPF mechanisms, DMARC policy, CAA issue/issuewild/iodef. |
| 📡 | DNS Propagation | Resolution across 10 major public resolvers worldwide. |
How it works
- Enter a domain — type any domain name in the search box above.
- Live analysis — our Go backend queries DNS servers, RDAP/WHOIS, and performs dozens of health checks in real-time.
- Get results — see a detailed report with pass/warning/fail indicators for every check, plus an overall health grade.
All checks run live — no scan history is stored, no accounts required.