SSL/TLS Certificates
33,361 of the 1,000,000 top sites in our Tranco top-1M census run Sectigo (3.3%). A certificate authority that issues SSL/TLS certificates used to secure websites with HTTPS. Detection is homepage-level HTML/header fingerprinting, so a site can run Sectigo on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | github.com | #29 (Tranco) | Find emails |
| 2 | roblox.com | #73 (Tranco) | Find emails |
| 3 | nginx.com | #95 (Tranco) | Find emails |
| 4 | f5.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| nokair.com | #157,231 | ASP.NET, AddThis, Amazon CloudFront + 14 more | Find emails |
| lapositiva.com.pe | #157,259 | Amazon Route 53, CrazyEgg, Dynatrace + 4 more | Find emails |
| procesos.com | #157,293 | Apache, Elementor, Font Awesome + 6 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| waterford-news.ie |
| #157,309 |
| Bootstrap, Chartbeat, Cloudflare + 11 more |
| Find emails |
| wifewantstoplay.com | #157,320 | ConsentMo, Google Analytics, Google Fonts + 4 more | Find emails |
| sinoptik.pl | #157,329 | DoubleClick (Google Ads), Google AdSense, Google Publisher Tag + 2 more | Find emails |
| netciti.co.id | #157,368 | Google Analytics, Google Tag Manager, Next.js + 6 more | Find emails |
| zipatlas.com | #157,374 | ASP.NET, Cloudflare, Google Analytics + 4 more | Find emails |
| korrekturen.de | #157,378 | Apache, DoubleClick (Google Ads), Google Publisher Tag + 2 more | Find emails |
| dealervideos.com | #157,382 | ASP.NET, Amazon Route 53, Microsoft 365 + 1 more | Find emails |
| awayresorts.co.uk | #157,393 | AB Tasty, Azure DNS, Azure Front Door + 4 more | Find emails |
| campsites.co.uk | #157,402 | ASP.NET, Awin, Azure DNS + 7 more | Find emails |
| manulifetravelinsurance.ca | #157,423 | Akamai edge/CDN, CSC (Digital Brand Services) | Find emails |
| mile.app | #157,486 | Cloudflare, Google Identity Services, Google Tag Manager + 4 more | Find emails |
| nektony.com | #157,489 | Cloudflare, Google Fonts, Google Tag Manager + 2 more | Find emails |
| schmiedmann.com | #157,543 | ASP.NET, Bootstrap, DoubleClick (Google Ads) + 12 more | Find emails |
| nsuk.edu.ng | #157,553 | Google Cloud DNS, Next.js, Nginx + 1 more | Find emails |
| schoen-klinik.de | #157,573 | Google Tag Manager, Usercentrics | Find emails |
| blackcircles.ca | #157,592 | Amazon CloudFront, Apache, Bootstrap + 8 more | Find emails |
| infocom.kr.ua | #157,604 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| inhealth.co.id | #157,647 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 2 more | Find emails |
| kiu.ac.kr | #157,698 | — | Find emails |
| sport.uz | #157,708 | Nginx | Find emails |
| nijmegen.nl | #157,736 | Bootstrap, Nginx, Popper.js + 3 more | Find emails |
| trafic.ro | #157,753 | ASP.NET, Bootstrap, Cloudflare + 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →