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 |
|---|---|---|---|
| sphero.com | #57,179 | Cloudflare edge/CDN, Google Fonts, Let's Encrypt + 9 more | Find emails |
| file.al | #57,218 | Bootstrap, Font Awesome, Google Analytics + 4 more | Find emails |
| carenet.com | #57,227 | Apache, Google Fonts, Google Hosted Libraries + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| enom.com |
| #57,230 |
| ASP.NET, Bootstrap, Google Fonts + 12 more |
| Find emails |
| kueski.com | #57,250 | AWS Lambda, Adobe Audience Manager, Amazon CloudFront + 40 more | Find emails |
| benarit.ru | #57,284 | All in One SEO, Font Awesome, JivoChat + 4 more | Find emails |
| cospuri.com | #57,289 | Apache, Google Fonts, Let's Encrypt + 4 more | Find emails |
| netnation.com | #57,315 | AOS, Adobe Fonts (Typekit), ConsentMo + 14 more | Find emails |
| gohost.kz | #57,331 | AddToAny, All in One SEO, Bootstrap + 13 more | Find emails |
| elvocero.com | #57,363 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 7 more | Find emails |
| ssi.com.vn | #57,378 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| addsearch.com | #57,402 | Ahrefs Analytics, Amazon CloudFront, Amazon Route 53 + 20 more | Find emails |
| step.ru | #57,411 | Bitrix, Nginx, PHP + 2 more | Find emails |
| acdsee.com | #57,419 | Amazon (ACM), Amazon Route 53, Apache + 6 more | Find emails |
| sieraddns.com | #57,432 | ASP.NET, Google Fonts, Microsoft IIS + 2 more | Find emails |
| checkmategaming.com | #57,444 | Blockthrough, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| s-pankki.fi | #57,464 | Azure API Management, Microsoft 365, Optimizely + 4 more | Find emails |
| fortunetelleroracle.com | #57,476 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| fsb.org.uk | #57,481 | Adobe Fonts, Adobe Fonts (Typekit), Adyen + 29 more | Find emails |
| aapm.org | #57,483 | ASP.NET, Amazon (ACM), Amazon Route 53 + 10 more | Find emails |
| hentai2read.com | #57,490 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| wpprovider.nl | #57,493 | Font Awesome, Google Analytics, Google Identity Services + 8 more | Find emails |
| truecrypt.org | #57,505 | Bootstrap, CDN Fonts, Cloudflare + 7 more | Find emails |
| metv.com | #57,516 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| midi.org | #57,522 | Cloudflare Turnstile, Google Analytics, Google Tag Manager + 8 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 →