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Bulk domain checker

Paste a list. Get an answer for every name in it.

What is a bulk domain checker?

A bulk domain checker tests hundreds or thousands of domain names for availability in a single operation, instead of one at a time. DotSeeka checks up to 2,000 names per search, querying them in parallel rather than sequentially.

The difference matters at scale. Checking a thousand names by hand through a registrar's search box is several hours of work. The same list here is one paste and one click.

How many domains can you check at once?

Measured, not estimated: 28.6 domains per second on a 120-name .com list, and 6.4 per second on the same names spread across eight different endings. Measured 6 September 2026 from a single server. A mixed list is slower because some registries answer far more slowly than Verisign, and the per-registry request rate is capped deliberately to stay polite.

How to check domains in bulk

1. Paste your listOne name per line. A bare keyword like exwalk is treated as exwalk.com. Write exwalk.* to expand it across every common ending at once. URLs and email addresses are reduced to their domain automatically.
2. Run the checkNames are queried in parallel. Progress, throughput and time remaining update live while it runs, so a long list is never a blank waiting screen.
3. Filter the resultsSwitch between All, Available, Taken and Unknown. Unknown is a real answer, not an error — it means the registry did not give a reliable response.
4. Export what you needCopy the domain column to the clipboard, or download Excel or CSV. The export always matches the filter on screen, so exporting from the Available tab gives only available names.

Input formats it accepts

Duplicates and unparseable lines are dropped before the search starts, and the count of skipped lines comes back with the results, so a messy list does not need cleaning first.

Exporting a bulk result

Excel export produces an .xlsx with a frozen, filterable header row and rows tinted by status, which is the format most people actually want when handing a shortlist to someone else. CSV export is available for anything that needs plain text, including an available-only variant.

Frequently asked questions