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.
Other ssl/tls certificates
| # | 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 |
|---|---|---|---|
| hn.cz | #49,687 | Cloudflare, Google Tag Manager, Mailchimp + 3 more | Find emails |
| smallyy.com | #49,696 | Alibaba Cloud DNS, Next.js, Nginx + 1 more | Find emails |
| swizzonic.ch | #49,734 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 15 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| biomerieux.com |
| #49,735 |
| Adobe Advertising Cloud, Adobe Analytics, Adobe Audience Manager + 27 more |
| Find emails |
| thomassabo.com | #49,747 | Cloudflare edge/CDN, Microsoft Clarity, PowerReviews + 2 more | Find emails |
| geoedge.com | #49,766 | Amazon Route 53, Google Fonts, Microsoft 365 + 4 more | Find emails |
| pse.com | #49,779 | ASP.NET, Amazon CloudFront, Apache + 11 more | Find emails |
| crpf.gov.in | #49,833 | Bootstrap, Fancybox, Google Analytics + 4 more | Find emails |
| serpstat.com | #49,834 | Awin, Cloudflare, Express + 5 more | Find emails |
| lee.com | #49,878 | Azure DNS, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| schuh.co.uk | #49,898 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN | Find emails |
| perfectworldgames.com | #49,917 | Amazon Route 53, Nginx, Swiper + 1 more | Find emails |
| sabacloud.com | #49,952 | NS1 | Find emails |
| mailplug.com | #49,967 | Daum, Google Ads Conversion, Google Analytics + 6 more | Find emails |
| cycling74.com | #49,970 | Amazon CloudFront, Atlassian Cloud, Cloudflare + 12 more | Find emails |
| bipm.org | #49,994 | Apache, Bootstrap, Google Analytics + 7 more | Find emails |
| sicomasp.com | #50,113 | Amazon Route 53, Apache, Google Fonts + 5 more | Find emails |
| audiobookbay.lu | #50,120 | Font Awesome, Google Analytics, Google Tag Manager + 6 more | Find emails |
| startlap.hu | #50,171 | Amazon Route 53, Meta Pixel, Nginx + 2 more | Find emails |
| aps.dz | #50,227 | Google Analytics, Google Tag Manager, Next.js + 1 more | Find emails |
| dpoczta.pl | #50,234 | Bootstrap, Font Awesome, Google Fonts + 5 more | Find emails |
| cameraddns.net | #50,248 | LiteSpeed, PHP, jQuery | Find emails |
| xtits.com | #50,254 | Fancybox, Google Fonts, Nginx + 1 more | Find emails |
| genie.co.kr | #50,261 | Kakao, Modernizr, Nginx + 1 more | Find emails |
| domainnetwork.com | #50,296 | Azure Front Door, Bootstrap, Google Tag Manager + 5 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 →