Bulk domain search
Check hundreds of domains at once
Paste your whole shortlist, pick the extensions that matter, and get a live availability matrix in seconds — free, no signup, straight from the registries. Export to CSV, copy the winners, register the one you want.
Bulk domain availability checker
One per line, or separated by commas or spaces. Extensions in what you paste are ignored — you pick those on the right. 0/60 names detected.
2 · Pick extensions
0 names × 6 extensions. Free, no signup, no limits.
Naming is a numbers game. Check like it.
Good names die one at a time. You brainstorm forty candidates, type the first into a registrar, lose momentum on the third taken result, and settle for something you never loved. Bulk search flips that: every candidate gets tested against every extension in one pass, so you compare a whole board of options instead of defending a single favourite.
The matrix view is the point. Reading down a column tells you which extension is still open across your list — useful when you want a consistent brand pattern. Reading across a row tells you how defensible one name is, which matters when you plan to buy the obvious variants so nobody squats on them later.
Every cell is a live lookup against the registry that actually controls the extension, using RDAP and DNS rather than a stale zone dump. That means a green cell is genuinely registerable at that moment, not a cached snapshot from last week's crawl.
How to run a good sweep
- 1
Bring 20–40 candidates
Enough range to spot a pattern; few enough to judge.
- 2
Start with a preset
Core for classic brands, Startup for products, Budget to keep spend down.
- 3
Filter to available only
Kill the noise and look at what you can actually buy.
- 4
Export and share
CSV into a spreadsheet so the team can vote before anyone buys.
- 5
Register same day
Availability is a snapshot — a shortlisted name can go at any time.
Who runs bulk domain searches
Founders naming a startup
Test the whole brainstorm at once and see which name is clean across .com, .io and .ai before the team falls in love with one.
Agencies pitching brands
Bring a client three name options that are provably available, with a CSV attached to the deck.
Brand protection
Sweep the obvious misspellings and extension variants around a live brand and register the gaps before a squatter does.
Domain investors
Run keyword lists across cheap extensions to find registerable inventory in one pass instead of hundreds of single lookups.
| Task | Registrar search box | FlashDomains bulk search |
|---|---|---|
| Names per run | One | Up to 60 |
| Extensions per run | One at a time, upsell list after | Every extension you select |
| Result format | A sales page | A sortable availability matrix |
| Export | None | CSV plus one-click copy of free names |
| Data source | Registrar inventory and upsells | Registry RDAP and live DNS |
| Cost | Free, but you're being sold to | Free, no signup, no quota |
Bulk domain search questions
What is a bulk domain search?
A bulk domain search checks many names against many extensions in one run instead of typing them one at a time. Paste 40 candidate names, pick six extensions, and you get 240 live availability answers in a single pass.
How many domains can I check at once?
Up to 60 names across as many extensions as you select, capped at 900 individual checks per run. That is enough for a full naming shortlist, a competitor sweep or a defensive-registration audit.
Is the bulk domain checker free?
Yes. There is no signup, no API key and no daily quota. Availability comes from the registries' own RDAP services and live DNS, the same sources a registrar queries.
How accurate are the results?
Each answer is a live lookup against the authoritative registry for that extension, not a cached list. A handful of registries publish no public lookup service; those cells show a question mark rather than a guess.
Can I export the results?
Yes. Export the full matrix as CSV for a spreadsheet, or copy just the available domains as a plain list to paste into a doc, Slack or a registrar cart.
Does bulk checking register the domains?
No. Checking is read-only and nobody is notified that you looked. When you're ready, click any available result to open it pre-filled at the registrar.
Narrowed it down to one name?
Run it through the full 300+ extension search, or pull its registry record first.