Bulk Whois Lookup

Bulk Whois Lookup is a free online tool that lets you query Whois registration data for up to 200 domains in a single session. The system processes domains concurrently, displaying real-time status for each entry in a structured results table.

Core Features

• Bulk Input: Enter one domain per line. The tool automatically strips http:// prefixes, removes duplicates, and filters out invalid entries.
• Concurrent Queries: Parallel processing significantly reduces total query time compared to sequential lookups, with each domain queried independently.
• Real-time Task Status: Each row shows a live status badge — Querying, Queued, Success, or Failed — alongside a progress bar and summary counters.
• Full Registration Data: Successful queries display EPP status, registrar, registration date, expiry date, registrant name, contact email, and DNS name servers.
• Availability Indicator: Domains with no registration record are flagged as "May be available" to support purchase decisions.
• Stop Anytime: Manually stop the batch at any point. Completed results are preserved and can still be exported.
• Excel Export: One-click export to a timestamped .xlsx file with auto-fitted column widths for easy archiving and analysis.

Use Cases

• Domain Acquisition: Check registration status for a list of candidate domains and quickly identify which ones are available to register.
• Renewal Management: Batch-query expiry dates for domains you own and export to Excel for renewal planning.
• Competitive Research: Analyze registration dates, registrars, and DNS providers for competitor-related domains.
• Brand Protection: Rapidly audit brand-related domain variants for unauthorized registrations.
• Security Investigation: Batch-check suspicious domain lists for registration details to support threat attribution.

How to Use

Enter up to 200 domain names in the text box, one per line. Click Fill Example to try it instantly with sample data. Click Start Query to begin — the results table updates in real time as each domain is processed. When complete (or after stopping manually), click Download Excel to save your results. Need to query more than 200 domains? Feel free to contact us.

Frequently Asked Questions

• Q: How many domains can I query at once?
  A: Up to 200 per session. Duplicates are removed automatically and invalid entries are silently filtered out. For larger batch requirements, please contact us.
• Q: How fast is the bulk query?
  A: With concurrent processing, 200 domains typically complete within 2–5 minutes, depending on network conditions and registry response times.
• Q: Can I stop mid-query?
  A: Yes. Click Stop and in-flight requests will finish normally while queued tasks are cancelled and marked as failed. All completed results remain exportable.
• Q: What fields are included in the Excel export?
  A: Domain, registration status, EPP status, registrar, registration date, expiry date, registrant name, contact email, name servers, and query result — 10 fields in total.
• Q: What does "May be available" mean?
  A: It means the Whois record returned no registration data, suggesting the domain may be unregistered. Always verify on a registrar platform before purchasing.