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.
| # | 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 |
|---|---|---|---|
| kansashealthsystem.com | #77,191 | ASP.NET, BugHerd, DigiCert + 7 more | Find emails |
| suzyshier.com | #77,222 | Bazaarvoice, Cloudflare edge/CDN, Google Fonts + 5 more | Find emails |
| gerencialcredito.com.br | #77,232 | Let's Encrypt, reCAPTCHA v2 | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| perueduca.pe | #77,245 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 4 more | Find emails |
| pangia.biz | #77,255 | Bootstrap, Google Fonts, Google Hosted Libraries + 3 more | Find emails |
| stych.fr | #77,259 | AB Tasty, Axeptio, Bootstrap + 14 more | Find emails |
| freedback.com | #77,276 | Amazon (ACM), Amazon Route 53, Apache + 3 more | Find emails |
| workman.co.jp | #77,286 | Akamai Edge DNS, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| ireceptar.cz | #77,294 | Cloudflare, Cloudflare edge/CDN, Didomi + 9 more | Find emails |
| nuclearblast.com | #77,319 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 9 more | Find emails |
| hokuohkurashi.com | #77,324 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| usealphaco.com.br | #77,341 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| podyumplus.com | #77,344 | Bootstrap, Cloudflare, Cloudflare Turnstile + 19 more | Find emails |
| oca.com.ar | #77,353 | AOS, ASP.NET, Bootstrap + 10 more | Find emails |
| nokidhungry.org | #77,359 | Amazon Route 53, ConsentMo, CrazyEgg + 10 more | Find emails |
| somatematica.com.br | #77,364 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| tonkosti.ru | #77,371 | DoubleClick (Google Ads), Google Publisher Tag, Google Tag Manager + 6 more | Find emails |
| raygun.com | #77,399 | ASP.NET, AWS Lambda, Amazon (ACM) + 19 more | Find emails |
| beminimalist.co | #77,403 | Cloudflare Bot Management, Cloudflare edge/CDN, GoAffPro + 12 more | Find emails |
| babesrater.com | #77,440 | ASP.NET, Ahrefs Analytics, Cloudflare + 10 more | Find emails |
| recambiofacil.com | #77,452 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 14 more | Find emails |
| youtubemultiplier.com | #77,454 | Apache, Google Analytics, Google Tag Manager + 2 more | Find emails |
| kuradashi.jp | #77,461 | Amazon Route 53, Cloudflare edge/CDN, Google Hosted Libraries + 11 more | Find emails |
| naughtymachinima.com | #77,481 | Apache, Bootstrap, Cloudflare + 6 more | Find emails |
| datagroup.ua | #77,485 | Akamai edge/CDN, Akamai mPulse, DigiCert + 2 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 →