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 |
|---|---|---|---|
| lilly.com | #5,400 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| specbench.org | #5,402 | Apache, Google Fonts, Hugo | Find emails |
| colliderporn.com | #5,438 | Nginx | Find emails |
| cbs.com |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| #5,475 |
| NS1, OpenResty, Varnish |
| Find emails |
| theepochtimes.com | #5,495 | Blockthrough, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| ltn.com.tw | #5,533 | Amazon CloudFront, Amazon Route 53, DoubleClick (Google Ads) + 8 more | Find emails |
| pitc.com.pk | #5,553 | Apache, Bootstrap, Font Awesome + 6 more | Find emails |
| cuhk.edu.hk | #5,564 | Apache | Find emails |
| credit-agricole.fr | #5,578 | Akamai Edge DNS, Apache, jQuery + 1 more | Find emails |
| kcl.ac.uk | #5,580 | ASP.NET, Bluesky, Contensis + 8 more | Find emails |
| ravelry.com | #5,632 | Atlassian Statuspage, Nginx, Ruby on Rails + 2 more | Find emails |
| mydlink.com | #5,651 | Nginx | Find emails |
| r-project.org | #5,699 | Apache, Bluesky, Bootstrap + 4 more | Find emails |
| brdtest.com | #5,756 | Amazon Route 53, Nginx | Find emails |
| hola.org | #5,762 | Amazon Route 53, Google Analytics, Google Fonts + 9 more | Find emails |
| afr.com | #5,785 | Amazon Route 53, DoubleClick (Google Ads), Fastly + 3 more | Find emails |
| tiscali.it | #5,788 | Astro, Google Fonts, Google Tag Manager + 3 more | Find emails |
| blacknight.com | #5,826 | Font Awesome, Foundation, Google Hosted Libraries + 14 more | Find emails |
| ionos.com | #5,828 | Apache, Kameleoon, Next.js + 2 more | Find emails |
| hani.co.kr | #5,850 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 5 more | Find emails |
| ovh.us | #5,868 | Drupal, TagCommander (Commanders Act) | Find emails |
| prf.hn | #5,891 | NS1, Nginx | Find emails |
| proxad.net | #5,903 | Next.js, Nginx, Turbopack + 1 more | Find emails |
| planalto.gov.br | #5,916 | — | Find emails |
| tacobell.com | #5,922 | AOS, Akamai Bot Manager, Akamai Edge DNS + 13 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 →