You've got a list of 100 brand candidates and you want the classic trio — .com, .net, .org — checked for each. That's 300 lookups. Doing it one at a time is a 90-minute slog. Here is how to skip that.
Cross-Product TLD Check in Seconds
Bulk Domain Checker runs entirely in your browser. No account, no upload, no watermark.
Add to Chrome — FreeWhy the .com/.net/.org trio still matters
Despite hundreds of new gTLDs, the original trio dominates trust signals. .com is the default consumer expectation; .net is acceptable; .org carries non-profit/community connotations. For a serious project, owning at least the .com is non-negotiable for most B2B and consumer use cases.
If your top-choice .com is taken, the agency-standard advice is: pick a different name, not a different TLD. Owning brandname.io while a competitor owns brandname.com is a years-long branding tax.
The cross-product expansion
The slow path: type each name 3 times in your list (acmeapp.com, acmeapp.net, acmeapp.org, …). The extension does this automatically. Toggle the .com/.net/.org filter and paste just the bare names. The expansion happens in-extension before lookups fire.
For 100 bare names with the trio toggle, you get 300 results in under 2 minutes.
When to add ccTLDs and new gTLDs
Two cases where adding more TLDs to the check matters:
- Defensive registration: if your brand is .com-secured but you want to head off squatters in major ccTLDs (.de, .co.uk, .com.br, .com.au), add those.
- Industry-specific gTLDs: tech projects often want .io, .dev, .app. Health projects sometimes want .health. Adding 2-3 industry TLDs to the trio is reasonable.
What you should NOT do: brute-force-check 50 TLDs for every name. The signal-to-noise on TLDs beyond ~10 is too low.
Reading the results
The output table shows three rows per base name (one per TLD checked). Filter to "available" to see which combos are open. A common pattern:
- Strong base names: 0/3 available (someone else owns the lot).
- Mid-tier base names: 1/3 available (usually .org or .net; the .com squatted).
- Weak base names: 3/3 available — usually a hint the name is too generic or hard to spell.
"All three available" can be a red flag, not a green one.
How Bulk-Check .com / .net / .org Availability — Tools Compared
| Method | Time for 100 names × 3 TLDs | TLD presets | Cross-product expansion |
|---|---|---|---|
| Bulk Domain Checker (extension) | Under 2 min | Yes | Automatic |
| Manual one-by-one at registrar | 60-90 min | No | Manual |
| GoDaddy bulk search | 6-10 min (paste 300) | No | Manual (paste each combo) |
| Namecheap web bulk | 15-25 min (split batches of 50) | No | Manual |
| Sheets formula + curl | ~10 min if scripted | Manual | Manual |
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
- How to Check 1,000+ Domains at Once
- Bulk Domain Checker vs GoDaddy
- Brandable Domain Search at Scale
- For SEO Agencies — Brand Audit Workflow
Frequently Asked Questions
Will I get rate-limited checking 300 domains in 2 minutes?
No. The extension paces requests at ~1 every 1.5 seconds; well under registry throttle thresholds.
Does it check the actual TLD or just the .com?
It checks each TLD you select. .com, .net, and .org each have separate registry servers; the extension queries the correct one per row.
Can I add custom TLDs?
Yes. Pro plan adds presets for any TLD set including new gTLDs and country-codes.
What about .co? Should I include it in the trio?
For a startup, yes — .co has become a near-equivalent to .com for tech brands. We sometimes refer to it as the "modern quartet." For a legacy or B2B-only brand, less critical.
Does this work for ccTLDs like .com.au?
Yes. Two-level ccTLDs are supported.
