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 |
|---|---|---|---|
| berlook.com | #110,869 | Cloudflare, Cloudflare edge/CDN, Judge.me + 5 more | Find emails |
| trustage.com | #110,870 | ASP.NET, Azure DNS, Azure Front Door + 14 more | Find emails |
| scootle.edu.au | #110,871 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| exotel.com | #110,902 | Amazon Route 53, Amplitude, Cloudflare Turnstile + 21 more | Find emails |
| esetnod32.ru | #110,905 | Bitrix, Cloudflare, Google Tag Manager + 8 more | Find emails |
| billabong.com | #110,924 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 13 more | Find emails |
| fantagraphics.com | #110,932 | Cloudflare edge/CDN, Google Tag Manager, Hotjar + 5 more | Find emails |
| shieldsgazette.com | #110,935 | Cloudflare Bot Management, Cloudflare edge/CDN, Dotmetrics + 10 more | Find emails |
| efor.es | #110,945 | Bootstrap, Drupal, Google Tag Manager + 10 more | Find emails |
| americanvintage-store.com | #110,953 | Axeptio, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| toodledo.com | #111,011 | Cloudflare, Cloudflare edge/CDN, FirstPromoter + 17 more | Find emails |
| roughdraftatlanta.com | #111,018 | DoubleClick (Google Ads), Google Publisher Tag, Google Tag Manager + 9 more | Find emails |
| namebox.ro | #111,063 | CanvasJS, Cloudflare, Cloudflare edge/CDN + 16 more | Find emails |
| zayzoon.com | #111,066 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 16 more | Find emails |
| moqups.com | #111,076 | Bluesky, Google Analytics, Google Tag Manager + 2 more | Find emails |
| buhgalteria.ru | #111,105 | AdRiver, Bitrix, Bootstrap + 16 more | Find emails |
| inwayhosting.com | #111,132 | Bootstrap, Font Awesome, Google Analytics + 6 more | Find emails |
| oxefit.com | #111,170 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 5 more | Find emails |
| banzai.org | #111,187 | Amazon (ACM), Amazon Route 53, Google Tag Manager + 3 more | Find emails |
| addall.com | #111,198 | Google Analytics, Google Fonts, Google Tag Manager + 6 more | Find emails |
| ledsone.co.uk | #111,207 | Cloudflare edge/CDN, Google Fonts, Judge.me + 8 more | Find emails |
| squ.edu.om | #111,218 | ASP.NET, Google AdSense, Google Analytics + 6 more | Find emails |
| 3plearning.com | #111,227 | Adobe Fonts (Typekit), Azure DNS, Cloudflare Bot Management + 19 more | Find emails |
| fordbarn.com | #111,239 | Amazon Advertising, Blockthrough, Cloudflare + 13 more | Find emails |
| offcourse.co | #111,242 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 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 →