WHOISDR PRO

Free tools for everyone.
Historical intelligence for pros.

Use current WHOIS, DNS and diagnostic tools for free. Upgrade when you need historical DNS, historical nameservers, historical WHOIS and API access.

Free

$0

For everyday domain research and troubleshooting.

  • Current WHOIS & RDAP
  • DNS record explorer
  • Domain Analyzer
  • IP & reverse DNS
  • SSL, redirects & HTTP headers
  • SPF, DKIM & DMARC checks
  • DNS propagation comparisons
Explore free tools
MOST CAPABLE

Pro

$19/mo

For domain investors, security teams, agencies and infrastructure research.

  • Everything in Free
  • Historical nameserver timeline
  • Historical A/AAAA/MX/NS/SOA/TXT
  • Historical WHOIS snapshots
  • Pro API keys
  • Daily API quotas & automation
  • Bulk multi-domain lookups
  • CSV exports & saved investigations
  • Team workspaces
  • Domain Watch change history
  • Provider-powered enterprise intelligence
Create account to upgrade

Why historical data is a Pro feature

Current DNS can be queried from public authoritative infrastructure. Historical DNS and historical WHOIS require continuously collected datasets maintained by specialist providers. WHOISDR Pro is designed to pass those provider costs through in a sustainable way while keeping everyday current lookups free.