You have a list of 1,200 domain ideas in a spreadsheet, and you want to know which are available before you waste time falling in love with names already registered. Pasting them one at a time is a half-day exercise. Pasting into GoDaddy bulk search caps you at 500. Here are the actually-fast options.
Check 1,000+ Domains Locally — No Rate Limits
Bulk Domain Checker runs entirely in your browser. No account, no upload, no watermark.
Add to Chrome — FreeWhy most "bulk" domain checkers cap so low
Domain registrars run a quiet honey trap. Their bulk-search tools advertise "check unlimited domains" but quietly cap the input field at 500 lines (GoDaddy), 50 lines (Namecheap web), or 100 lines (Dynadot). The reason is cost: each lookup hits their internal WHOIS API, and they price their flat-rate plans assuming most users check fewer than 100.
That's fine if you have 50 ideas. If you have a 1,200-row spreadsheet from a brainstorm, you'll burn an afternoon splitting it into 3 batches and re-pasting.
The fast path: a Chrome extension that runs in your browser
The Bulk Domain Checker extension does the work locally:
- Paste any list — newline, comma, or tab-separated. No artificial cap.
- Pick TLDs to filter on (or leave default to check whatever you pasted).
- Click Run. Each row goes through a DNS A-record probe + a fallback WHOIS check to disambiguate parked vs available.
- Export available results as CSV.
1,200 domains finishes in 4-7 minutes on a typical home connection. Nothing leaves your machine except the DNS queries themselves (which any browser already makes when you visit a site).
When the registrar tools are still useful
If your list is small (under 100), GoDaddy bulk search has one advantage: it shows you the list price for each available domain in the same view. The extension only tells you "available", not "available for $9 vs $69 premium." For a small list where price matters, that's worth the extra clicks.
Namecheap's bulk page is also useful when you've already decided to buy at Namecheap and want a single-click "add all available to cart" flow. The extension doesn't auto-add to a registrar cart.
Avoiding false negatives on parked domains
A "parked" domain is registered but has no real website — common with squatters. A naive availability check that only does DNS A-record lookup will return "available" if the parked page is on a generic landing IP. The Bulk Domain Checker extension does a 2-step probe: DNS first, then a WHOIS fallback for ambiguous cases. That catches roughly 95% of parked-vs-available correctly without making you wait on slow WHOIS servers for every single row.
If your use case is domain flipping (buying expired good names), accuracy on parked status matters a lot. For brainstorming a new SaaS name, less so.
Workflow for SEO agencies and domainers
Two repeating workflows we see:
- SEO agency, brand audit: client gives you 30 brand variations, you check the .com / .co / .io / .ai / .app / .dev for each (180 lookups). Done in under 2 minutes locally vs 15 minutes split across registrar tabs.
- Domainer, expiring drops: dump 5,000 candidate drops from ExpiredDomains.net, run availability + recent-expiry filter overnight, export the keep list. Out of reach with web bulk tools that gate at 500.
How Check 1,000+ Domain Names at Once — Tools Compared
| Tool | Bulk cap | Cost | Account required | Rate limited |
|---|---|---|---|---|
| Bulk Domain Checker (extension) | No cap | Free | No | No |
| GoDaddy bulk search | 500 | Free | Yes | Yes (per-account) |
| Namecheap web bulk | 50 | Free | No | Yes |
| Dynadot bulk | 100 | Free | Yes | Yes |
| Domains-Index bulk API | Pay-per-call | $0.01-0.05/lookup | Yes (API key) | Yes |
| Manual curl + WHOIS scripts | No cap | Free + sweat | No | Depends on registry |
Get It Done in Under a Minute
Install the free Chrome extension and process your PDFs locally. Works on Windows, Mac, Linux, and Chromebook.
Add Bulk Domain Checker to ChromeRelated Guides
- Bulk Domain Checker vs GoDaddy Bulk Search
- Bulk WHOIS Lookup Without Rate Limits
- How to Find Expired Domains in Bulk
- Domain Availability Check Without Rate Limits
Frequently Asked Questions
Is there a free way to check 1,000 domains at once?
Yes. The Bulk Domain Checker Chrome extension does it locally with no signup and no rate limit. Most registrar bulk tools cap at 50-500 names per session.
Will I get rate-limited by registries?
The extension paces requests and uses a DNS-first strategy that avoids WHOIS rate limits. For more than ~5,000 domains in a single batch you may want to split into batches of 2,000.
Does it show prices?
No. It shows availability only. For pricing, use GoDaddy or Namecheap directly after you have a shortlist.
Can it detect parked domains?
Yes. It does a 2-step DNS + WHOIS check that distinguishes "available" from "parked but registered" in roughly 95% of cases.
Does it work with country-code TLDs (.de, .co.uk, .ca)?
Yes for most ccTLDs. A handful of country registries throttle WHOIS aggressively (.io was famous for this) and may need slower batches.
