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Bulk WHOIS checker·throttled · CSV export

A registrar audit, in one queue.

Drop a list of domains, set a polite request interval, hit start. Watch every WHOIS record land in a sortable table — then export the rows you care about.

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.

Total
0
0 queued
Requests
0
0 in flight
Success
0
—
Failed
0
—
Progress
0%
idle
0 rows
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 bulk WHOIS?

An audit at registrar scale.

Checking domains one at a time doesn't scale. The bulk WHOIS queue is built for portfolio owners, brand-protection teams, and anyone auditing a list.

Throttled, ban-safe queue

Requests are spaced at an interval you set, so a 100-domain sweep stays under registry rate limits and finishes without a single IP ban.

Sortable, filterable table

Every record lands in one grid — age, creation/expiry dates, registrar, nameservers and status — sortable and scannable side by side.

CSV export

Export only the rows you ticked, or dump the whole table including failures — ready for a spreadsheet, a report, or your own tooling.

Stop & resume anytime

Halt the queue mid-sweep and pick up exactly where you left off. Completed rows are kept and the cursor moves forward — no repeated lookups.

Stop second-guessing.

Find your domain in the next 30 seconds.

Free forever. No login required. 1,100+ TLDs in one query — plus AI suggestions and the premium marketplace.

Start checking now Learn more
1,147
TLDs
200ms
Avg lookup
100
Suggestions/query
FAQ

Bulk WHOIS, demystified.

WHOIS servers are run by individual registries and many will rate-limit or temporarily IP-ban a host that bursts hundreds of queries at once. A spaced-out queue (e.g. one every 800ms) stays under almost every public limit and finishes a 100-domain sweep in under two minutes.
The gap between the end of one request and the start of the next. We schedule the next lookup `interval` ms after the previous one resolves, so the network latency of each request is on top of the interval — your effective rate is always lower than 1000 / interval per second.
Yes. Click Stop and the queue halts after the in-flight request finishes. Press Start again and we pick up at the first unfinished row — completed rows are kept, the cursor moves forward.
Domain, age, creation/expiry/updated dates, registrar name, all nameservers (pipe-separated), final status, and any error reason. Export-selected exports only the rows you ticked; Export-all dumps the whole table including failures.
WHOIS servers fail for ordinary reasons: timeouts, rate-limit responses, or TLDs whose registry does not expose WHOIS at all (a few new gTLDs). Failed rows show the reason inline; you can re-run by clicking Reset and starting again.