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 |
|---|---|---|---|
| telephonedirectories.us | #121,207 | AOS, Bootstrap, Cloudflare + 12 more | Find emails |
| perfect-english-grammar.com | #121,221 | Cookiebot, Google Ads Conversion, Google Analytics + 7 more | Find emails |
| artsteps.com | #121,224 | Apache, Google Fonts, Paddle + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| iamcalcio.it | #121,244 | Google AdSense, Google Analytics, Google Publisher Tag + 9 more | Find emails |
| level-sense.com | #121,257 | Ahrefs Analytics, Bootstrap, ClickTale (Contentsquare) + 13 more | Find emails |
| parachutehome.com | #121,267 | Amazon Route 53, Attentive, Bazaarvoice + 16 more | Find emails |
| bittv.ltd | #121,268 | Let's Encrypt, Nginx, Telegram + 2 more | Find emails |
| biz-gid.com | #121,295 | Cloudflare, Google AMP, Google AdSense + 10 more | Find emails |
| sonoff.tech | #121,296 | Cloudflare edge/CDN, Font Awesome, GoAffPro + 9 more | Find emails |
| webdsn.net | #121,360 | Font Awesome, Google Ads Conversion, Google Analytics + 6 more | Find emails |
| concretecms.com | #121,364 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| maxicoffee.com | #121,383 | AB Tasty, Adobe Experience Cloud (Launch), Amazon CloudFront + 14 more | Find emails |
| gettingout.com | #121,415 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| standards.org.au | #121,447 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| 1sttix.org | #121,450 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| fishusa.com | #121,459 | BigCommerce, ChatGPT Ads Pixel, Cloudflare + 11 more | Find emails |
| charlottesweb.com | #121,553 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 8 more | Find emails |
| balatarin.com | #121,560 | Google Cloud DNS, reCAPTCHA Enterprise, reCAPTCHA v2 | Find emails |
| bulkwp.com | #121,569 | Google Fonts, Let's Encrypt, Nginx + 3 more | Find emails |
| alchimiaweb.com | #121,592 | Google Analytics, Google Tag Manager, Klaviyo + 6 more | Find emails |
| ginasthma.org | #121,598 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| epg.one | #121,612 | Cloudflare, Font Awesome, Google Analytics + 8 more | Find emails |
| animate.co.jp | #121,642 | Bluesky, Google Tag Manager, Nginx + 4 more | Find emails |
| babyone.de | #121,654 | Google Tag Manager, Let's Encrypt, Scarab Research (SALESmanago) + 2 more | Find emails |
| aumo.jp | #121,675 | Amazon (ACM), Amazon Advertising, Amazon Route 53 + 11 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 →