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Bulk WHOIS Lookup Tool·Smart Throttle · CSV Export

Bulk WHOIS lookup & instant domain audit.

Drop a list of domains, adjust request intervals, and fetch live WHOIS records in bulk. Audit registrars, creation dates, and nameservers in a sortable table — then export to CSV.

Bulk WHOIS

Queue. Throttle. Lookup.

Paste a list of domains, set a polite interval between requests, and we'll walk the registry one entry at a time without tripping rate limits.

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google.comgithub.comopenai.comlinear.appvercel.comcloudflare.comstripe.comfigma.comnotion.soanthropic.comzoom.usslack.com
ms between requests
ms

Higher intervals = friendlier to WHOIS servers, lower chance of IP blocking. 800ms is a safe default.

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0 queued
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0 in flight
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No results yet
Paste domains above and press Start to begin the sweep.
Success — WHOIS record returned Checking — request in flight Failed — timeout, rate-limit, or unsupported TLD Queued — waiting its turn
WHY USE BULK WHOIS CHECKER?

Domain audit & WHOIS lookup at scale.

Checking domain records one by one is inefficient. Our bulk WHOIS lookup tool is built for domain investors, brand protection teams, and IT security experts auditing large portfolios.

Throttled, ban-safe requests

Custom request intervals keep your queries safe from registry rate limits and IP bans, ensuring smooth WHOIS lookups for large lists.

Sortable WHOIS data table

Track domain age, registrar, creation and expiration dates, nameservers, and status — all in one clean, filterable grid.

Export WHOIS results to CSV

Download your selected domain records or the full dataset in CSV format — perfect for spreadsheets, audit reports, or custom tools.

Pause & resume anytime

Pause your bulk WHOIS queue mid-sweep and resume whenever you're ready. Completed rows stay saved without duplicate lookups.

FAQ

Bulk WHOIS lookup, demystified.

WHOIS servers are maintained by individual registries that rate-limit or temporary IP-ban servers making too many parallel requests. Spacing out queries in a queue ensures your bulk lookup stays under rate limits and completes safely.
The interval controls the delay between consecutive WHOIS queries. Adjusting this setting helps you fine-tune the lookup speed based on registry rate limits, balancing maximum speed with zero IP blocks.
Yes. You can click Stop at any point to halt the queue after the current request finishes. Clicking Start again resumes the bulk check from the last unprocessed domain without losing completed data.
The exported CSV file includes domain name, age, creation, expiration, and last updated dates, registrar name, nameservers, and registration status. You can export selected rows or the entire WHOIS audit table.
Lookups can fail due to server timeouts, temporary registry rate limits, or TLDs that restrict public WHOIS access. The table displays the exact failure reason so you can easily retry those specific domain names.