Certum vs Gandi

Certum is used by more websites in our catalog: 579 use Certum and 163 use Gandi.

Gandi sites have the higher median Ahrefs Domain Rating (Certum: 55, Gandi: 59).

Between 2026-06 and 2026-07, Certum went from 0.08% to 0.07% of all tracked sites, while Gandi went from 0.02% to 0.02%. Gandi is gaining ground faster in our index.

No. A site runs a single SSL certificate authority, so Certum and Gandi 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.