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 |
|---|---|---|---|
| studyspanish.com | #107,158 | Amazon Advertising, Bootstrap, Cloudflare + 19 more | Find emails |
| bidsquare.com | #107,198 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| santotomas.cl | #107,222 | Axios, Backbone.js, Citrix NetScaler + 15 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| hd21.com | #107,238 | Cloudflare, Google Analytics, Let's Encrypt + 3 more | Find emails |
| zoomgovdev.com | #107,245 | Amazon Route 53, Bootstrap, Cloudflare Bot Management + 7 more | Find emails |
| cssdesignawards.com | #107,262 | Google Fonts, Nginx, Sectigo + 3 more | Find emails |
| centroculturalrecoleta.org | #107,276 | Apache, Bootstrap, Google Analytics + 7 more | Find emails |
| beyondyoga.com | #107,283 | Cloudflare edge/CDN, Gorgias, Klaviyo + 14 more | Find emails |
| imagequix.com | #107,288 | All in One SEO, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| limetorrents.lol | #107,290 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 7 more | Find emails |
| edinoepole.ru | #107,301 | Google Ads Conversion, Google Analytics, Nginx + 3 more | Find emails |
| sascar.com.br | #107,325 | Cloudflare Bot Management, Cloudflare edge/CDN, Fancybox + 16 more | Find emails |
| blackanddecker.com | #107,329 | Akamai Edge DNS, Algolia, Bazaarvoice + 28 more | Find emails |
| bluray-disc.de | #107,339 | Consentmanager.net, Google Analytics, Google Tag Manager + 6 more | Find emails |
| provisov.net | #107,353 | All in One SEO, Bootstrap, Font Awesome + 10 more | Find emails |
| file-upload.net | #107,354 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| thecanadianpressnews.ca | #107,379 | Amazon Route 53, DoubleClick (Google Ads), Fastly + 9 more | Find emails |
| abudhabi.ae | #107,407 | Dynatrace | Find emails |
| billieeilish.com | #107,420 | Amazon Route 53, Cloudflare edge/CDN, Google Tag Manager + 6 more | Find emails |
| gravesales.com | #107,429 | CleanTalk, Font Awesome, Foundation + 13 more | Find emails |
| passenger-clothing.com | #107,434 | Cloudflare edge/CDN, ConsentMo, Google Tag Manager + 11 more | Find emails |
| mvmt.com | #107,439 | Adobe Fonts (Typekit), Affirm, Cloudflare edge/CDN + 12 more | Find emails |
| humanmetrics.com | #107,440 | ASP.NET, Google AdSense, Google Analytics + 7 more | Find emails |
| gethired.com | #107,448 | Amazon (ACM), Bootstrap, Cloudflare + 10 more | Find emails |
| okprint.kz | #107,454 | DataLife Engine, DoubleClick (Google Ads), Google Ads Conversion + 4 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →