Websites Using Let's Encrypt

Let's Encrypt is an SSL certificate authority. Site Stats Database detects it on the websites it tracks by analyzing each site's homepage, response headers, and DNS, and has currently found it on 466,882 websites.

Site Stats Database currently tracks 466,882 websites using Let's Encrypt. That makes it the #1 most common ssl authority out of 1,047 we detect in this category.

The most common are News, Community, and Repair sites, and they are most common in United States and Spain. The breakdowns above show the full split across topics, markets, authority, and monetization, based on the 466,882 websites using Let's Encrypt we track.

Let's Encrypt is one of 1,047 ssl authority options Site Stats Database detects. The alternatives section lists the others by adoption, and you can compare Let's Encrypt head-to-head with any of them.

They tend to have lower authority than the typical website: the median Let's Encrypt site has an Ahrefs Domain Rating of 23, lower than the 28 median across all sites Site Stats Database tracks.

Over the last 2 months, the number we track grew 34% and their combined traffic rose 2.6%, based on Site Stats Database's month-by-month snapshots of this group.

Traffic estimates, organic keywords, and authority come from DataForSEO; Domain Rating comes from Ahrefs' public endpoint; and technology detection (including Let's Encrypt) comes from Site Stats Database's own crawler, which inspects each site's HTML, headers, and infrastructure.

At least monthly. Traffic and rankings refresh every month, and technology detections are refreshed as sites are re-crawled, so this page always reflects the current 466,882 Let's Encrypt websites.

Yes. The complete, filterable list of all 466,882 Let's Encrypt websites, enriched with traffic history, authority, keywords, and the full tech stack, is available with a Site Stats Database plan.