All Tools

Complete AI-generated intelligence report: DNS, WHOIS, SSL, security, email, and more.

Side-by-side comparison of two domains across every metric.

Registration info: registrar, creation/expiry dates, nameservers, status.

Explore the top 100,000 domains by popularity and activity.

Query A, AAAA, MX, NS, TXT, SOA, CAA, and other DNS record types.

Verify DNS propagation across 26 public resolvers worldwide.

Registration date, exact age, expiry, registrar, and first archive capture — answered on the page.

What a domain was when AboutUs recorded it (2006–2014) and what it is today: still the same organisation, or changed hands?

Expired, in redemption or pending delete? Where a domain sits in its dying, and the day it will be released.

Every nameserver asked directly, side by side: NS set, SOA serial, A, MX and TXT, plus what the parent says and whether the glue is stale.

Do your nameservers agree? Every server's SOA serial side by side, the zone's edit diary, and its expire clock.

Your SPF record, its verdict, and the 10-lookup budget, instantly.

Probe the common DKIM selectors and validate any keys found.

Your SPF record gets ten DNS lookups. The tree shows where every one goes, and which vendor include spends the eleventh.

Policy, alignment, and whether it actually enforces anything.

Mail servers, priorities, IPs, and reverse DNS in one pass.

Live TLS handshake: issuer, expiry countdown, protocol, SANs.

Which hostnames are still renewed by a person? Read from the public certificate log's renewal rhythm.

All record types on one page with a shareable result link.

Measure DNS resolution speed from multiple regions worldwide.

Continuous monitoring of public resolver speed and reliability.

Side-by-side comparison of Google, Cloudflare, Quad9, and more.

A+ to F grade across DNSSEC, email auth, CAA, and more.

Full audit: why is your email going to spam? Fix plan included.

Full cryptographic chain of trust verification.

A zone signed with plain NSEC names every record it has. Follow the chain and see the whole list.

Is a stranger answering for your hostname? Finds DNS records still pointing at cloud IPs you released.

Validate SPF, DKIM, and DMARC with detailed recommendations.

Check if a domain or IP is on major DNS blacklists.

Detect DGA, DNS tunneling, fast-flux, and suspicious patterns.

Review past lookups and compare changes over time.

Reference articles on DNS concepts and best practices.