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Domain WHOIS Lookup

Look up domain registration information including registrar, creation date, expiration date, and nameservers. Useful for verifying domain ownership and checking domain age.

Domain WHOIS Lookup

Check domain registration and ownership details

AI-Powered Analysis

Why check WHOIS?

  • Domain age affects email deliverability (older = better)
  • Verify domain ownership and legitimacy
  • Check when domain expires (renewal reminders)
  • Identify the DNS/hosting provider

About this tool

This free utility is designed to help email marketers and developers improve their deliverability and campaign performance. At Sequenzy, we believe in providing transparent, helpful tools for the community.

Frequently Asked Questions

WHOIS records typically show the domain registrar, registration and expiration dates, nameservers, and sometimes owner contact information (though this is often privacy-protected now).

Older domains generally have better email deliverability. New domains are often flagged as suspicious by spam filters. A domain should be at least 30 days old before sending marketing emails.

WHOIS privacy replaces your personal contact information with the registrar's proxy details. This protects against spam and identity theft but is now common due to GDPR regulations.

Check the domain age (older is better), verify the registrar is reputable, look for consistent nameservers, and check if the domain matches the company's official records.

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