CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). Google's CAPTCHA/bot-scoring widget, the most widely deployed CAPTCHA by far. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| pornslash.com | #53,334 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 3 more | Find emails |
| educationdata.org | #53,358 | Google Analytics, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| easyspace.com | #53,360 | DigiCert, Font Awesome, Google Fonts + 11 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| ias.ac.in | #53,375 | Amazon (ACM), Amazon Route 53, Apache + 12 more | Find emails |
| uoou.cz | #53,376 | DigiCert, Nginx, reCAPTCHA v2 | Find emails |
| wordtune.com | #53,387 | AWS Lambda, Amplitude, Cloudflare + 15 more | Find emails |
| omroepflevoland.nl | #53,403 | AT Internet, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| philarchive.org | #53,407 | Bootstrap, Bulma, Cloudflare + 10 more | Find emails |
| garden.org | #53,426 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| dropout.tv | #53,429 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Tag Manager + 12 more | Find emails |
| cduniverse.com | #53,447 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| nobullproject.com | #53,465 | Attentive, Cloudflare, Cloudflare Bot Management + 13 more | Find emails |
| gelacy.app | #53,484 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 7 more | Find emails |
| partstree.com | #53,490 | Adobe Fonts, Adobe Fonts (Typekit), Amazon CloudFront + 6 more | Find emails |
| tarhely.com | #53,507 | Apache, Bootstrap, DigiCert + 13 more | Find emails |
| wildskirts.com | #53,516 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| mazeram.com | #53,518 | Bootstrap, Cloudflare, Let's Encrypt + 7 more | Find emails |
| skima.jp | #53,533 | Bootstrap, Font Awesome, Google Fonts + 11 more | Find emails |
| dropmefiles.com | #53,544 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 7 more | Find emails |
| heromotocorp.com | #53,550 | Adobe Experience Cloud (Launch), Fastly, Google Analytics + 7 more | Find emails |
| dext.com | #53,560 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| spscommerce.com | #53,569 | Amazon Route 53, Divi, Fastly + 15 more | Find emails |
| meetheage.com | #53,575 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| eporner.video | #53,582 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 7 more | Find emails |
| coffeecup.com | #53,597 | Apache, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →