Internet2 vs Let's Encrypt

Let's Encrypt is used by more websites in our catalog: 978 use Internet2 and 466,882 use Let's Encrypt.

Internet2 sites have the higher median Ahrefs Domain Rating (Internet2: 76, Let's Encrypt: 23).

Between 2026-06 and 2026-07, Internet2 went from 0.16% to 0.11% of all tracked sites, while Let's Encrypt went from 59% to 53%. Internet2 is gaining ground faster in our index.

No. A site runs a single SSL certificate authority, so Internet2 and Let's Encrypt are mutually exclusive.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.