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 |
|---|---|---|---|
| icma.org | #133,990 | ASP.NET, AddThis, DoubleClick (Google Ads) + 19 more | Find emails |
| shipengine.com | #134,009 | 6sense, Amazon CloudFront, Amazon Route 53 + 27 more | Find emails |
| thermatru.com | #134,013 | ASP.NET, Akamai Edge DNS, Bazaarvoice + 12 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| uschedule.com | #134,026 | ASP.NET, Amazon Route 53, Bootstrap + 7 more | Find emails |
| 10footwave.com | #134,036 | AOS, Amazon Route 53, Cloudflare Bot Management + 16 more | Find emails |
| dib.ae | #134,037 | ASP.NET, Dynatrace, Google Tag Manager + 6 more | Find emails |
| u-on.ru | #134,052 | Google Fonts, Meta Pixel, Nginx + 9 more | Find emails |
| mb-nn.ru | #134,061 | Bootstrap, Cloudflare, Cloudflare Turnstile + 12 more | Find emails |
| trackmanrange.com | #134,062 | ASP.NET, Azure API Management, Azure DNS + 8 more | Find emails |
| slgr.gr | #134,065 | Bootstrap, Express, Ghost + 7 more | Find emails |
| batstate-u.edu.ph | #134,066 | Elementor, Fancybox, Font Awesome + 5 more | Find emails |
| optavia.com | #134,070 | Adobe Fonts (Typekit), Brightcove, Fastly + 10 more | Find emails |
| wevsy.com | #134,075 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 14 more | Find emails |
| clearrate.com | #134,084 | Adobe Fonts (Typekit), Amazon CloudFront, Apache + 12 more | Find emails |
| durand.com.br | #134,105 | Google Fonts, Let's Encrypt, Meta Pixel + 7 more | Find emails |
| vipflash.de | #134,107 | AddThis, Apache, Consentmanager.net + 10 more | Find emails |
| eurobuch.com | #134,115 | Apache, Google Identity Services, Let's Encrypt + 4 more | Find emails |
| london-luton.co.uk | #134,119 | ASP.NET, Azure API Management, Azure Front Door + 8 more | Find emails |
| sesisp.org.br | #134,128 | ASP.NET, Amazon (ACM), Amazon CloudFront + 19 more | Find emails |
| sunphoto.ro | #134,134 | Apache, Bootstrap, Cloudflare + 5 more | Find emails |
| cires21.com | #134,149 | AWS Lambda, Amazon CloudFront, Amazon S3 + 10 more | Find emails |
| ebookrenta.com | #134,171 | Amazon Route 53, Apache, Font Awesome + 7 more | Find emails |
| limitedrun.com | #134,183 | Adobe Fonts (Typekit), Amazon Route 53, Apache + 5 more | Find emails |
| spokex.com | #134,192 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 10 more | Find emails |
| squallnetwork.net | #134,193 | AOS, Apache, Font Awesome + 7 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 →