CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). 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 |
|---|---|---|---|
| foleon.com | #35,695 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| americantrucks.com | #35,717 | ASP.NET, Affirm, Cloudflare + 13 more | Find emails |
| itprotoday.com | #35,726 | Chartbeat, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| bolt.com | #35,728 | Amazon CloudFront, Amazon Route 53, Cloudinary + 13 more | Find emails |
| dapl.ru | #35,737 | Apache, Google Analytics, Slick Carousel + 3 more | Find emails |
| thegrio.com | #35,774 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 7 more | Find emails |
| atriumhealth.org | #35,779 | ASP.NET, Azure API Management, Azure Front Door + 14 more | Find emails |
| appsumo.com | #35,782 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| americanaddictioncenters.org | #35,807 | Cloudflare, Cloudflare edge/CDN, Drift + 5 more | Find emails |
| iplocate.io | #35,819 | Adobe Fonts (Typekit), Ahrefs Analytics, Algolia + 11 more | Find emails |
| gigafile.nu | #35,828 | Amazon Advertising, Apache, DoubleClick (Google Ads) + 13 more | Find emails |
| more.com | #35,908 | ASP.NET, Akamai Bot Manager, Akamai Edge DNS + 12 more | Find emails |
| flooranddecor.com | #35,909 | Adobe Fonts (Typekit), Algolia, Amplience + 14 more | Find emails |
| wdrb.com | #35,913 | Amazon Advertising, DoubleClick (Google Ads), Google Fonts + 5 more | Find emails |
| dailygazette.com | #35,922 | Blockthrough, Google Fonts, Google Tag Manager + 6 more | Find emails |
| digitalinsight.com | #35,943 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 8 more | Find emails |
| lutron.com | #35,976 | Azure DNS, Bazaarvoice, ConsentMo + 12 more | Find emails |
| bogos.io | #35,982 | Ahrefs Analytics, Cloudflare, Cloudflare edge/CDN + 16 more | Find emails |
| matkafasi.com | #35,983 | Apache, Bootstrap, Font Awesome + 6 more | Find emails |
| kumu.io | #35,991 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 13 more | Find emails |
| elpub.ru | #36,006 | Bootstrap, Google Fonts, Google Tag Manager + 7 more | Find emails |
| yieldoz.com | #36,007 | Apache, Bootstrap, Cloudflare + 9 more | Find emails |
| fwrd.com | #36,012 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 5 more | Find emails |
| maralhost.com | #36,033 | Font Awesome, Let's Encrypt, LiteSpeed + 1 more | Find emails |
| nuso.io | #36,038 | AWS Lambda, Adobe Fonts (Typekit), Cloudflare + 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →