Yesterday Let's Encrypt reached a new milestone: the unique set of all fully-qualified domain names in the currently-unexpired certificates issued by Let's Encrypt is now 10,022,446 .
This data is coming from the same source as my previous posts: my CT box which is maintaining a state of Censys.io and Certificate Transparency using github.com/jcjones/ct-sql and a much-abused MariaDB server.
Let's Encrypt Growth Timeline
You can take a look at the graph in live-form, as well as some of the datasets coming from it at ct.tacticalsecret.com .
This is the future of the Let's Encrypt Statistics page on letsencrypt.org. The current graphs on LE's site are my doing, and they don't scale. The graphs there right now are limited due to window functions that were intended to be replaced long before now - but we're all busy. The update to the Let's Encrypt website to use these new datasets is live as PR #61 on the LE Website repo , awaiting ops time to set up the cron job. In the meanwhile, you can see the demo here.