CAPTCHA & Bot Protection
927 of the 1,000,000 top sites in our Tranco top-1M census run Yandex SmartCaptcha (0.1%). Yandex's CAPTCHA challenge product for filtering bot traffic. Detection is homepage-level HTML/header fingerprinting, so a site can run Yandex SmartCaptcha on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | firstvds.ru | #1,843 (Tranco) | Find emails |
| 2 | nag.ru | #3,951 (Tranco) | Find emails |
| 3 | kommersant.ru | #4,865 (Tranco) | Find emails |
| 4 | punchmedia.ru |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| sdo-vot.ru | #587,104 | AOS, Django, Let's Encrypt + 6 more | Find emails |
| proskater.ru | #587,589 | Cloudflare, Let's Encrypt, Nginx | Find emails |
| oncovet.ru | #588,107 | Google Fonts, Let's Encrypt, Mail.ru Analytics (Top100) + 6 more | Find emails |
| #6,215 (Tranco) |
| Find emails |
| 5 | irecommend.ru | #6,269 (Tranco) | Find emails |
| artzvezdy.ru |
| #588,180 |
| Let's Encrypt, Mail.ru Analytics (Top100), Nginx + 5 more |
| Find emails |
| intellex.ru | #588,948 | Nginx, Swiper, WordPress + 1 more | Find emails |
| uibcom.ru | #589,369 | Bitrix, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| kadis.ru | #590,385 | Bootstrap, Fancybox, Font Awesome + 13 more | Find emails |
| dbi.ru | #592,821 | All in One SEO, Amazon Route 53, Let's Encrypt + 6 more | Find emails |
| ayna-spb.ru | #593,339 | Let's Encrypt, Mail.ru Analytics (Top100), Mindbox + 9 more | Find emails |
| noboring-finance.ru | #596,117 | Bitrix, Let's Encrypt, Nginx + 6 more | Find emails |
| avtgr.ru | #596,948 | Cloudflare, Fancybox, Google Analytics + 11 more | Find emails |
| uniquefabric.ru | #597,015 | CloudPayments, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| iskrauraltel.ru | #598,497 | AOS, Let's Encrypt, Nginx + 8 more | Find emails |
| chelclinic.ru | #602,668 | Bootstrap, Google Fonts, Let's Encrypt + 9 more | Find emails |
| cpphmao.ru | #603,235 | Bitrix, Let's Encrypt, PHP + 5 more | Find emails |
| karniz.ru | #603,350 | Bitrix, Let's Encrypt, Nginx + 4 more | Find emails |
| oase.su | #604,050 | Bitrix, Bootstrap, Font Awesome + 10 more | Find emails |
| ubpo.ru | #605,788 | Bitrix, Font Awesome, Nginx + 6 more | Find emails |
| astra-academy.ru | #606,096 | Let's Encrypt, Nginx, PHP + 2 more | Find emails |
| data-light.ru | #606,705 | Cloudflare, Let's Encrypt, Nginx + 4 more | Find emails |
| daichi.business | #606,822 | Bitrix, Nginx, PHP + 1 more | Find emails |
| viferon.su | #607,359 | Let's Encrypt, Nginx, PHP + 1 more | Find emails |
| online-otvet.ru | #608,801 | Cloudflare, Google AdSense, Google Hosted Libraries + 7 more | Find emails |
| avilon-trade.ru | #609,428 | Bitrix, Font Awesome, Google Tag Manager + 7 more | Find emails |
| mayrveda.ru | #610,732 | BotFAQtor, DDoS-Guard, Mail.ru Analytics (Top100) + 4 more | Find emails |
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 →