Top SSL Issuers

Certificate authorities that issue the most SSL certificates across tracked domains.

1 Let's Encrypt

120,223 domains

2 Google Trust Services

73,458 domains

3 Sectigo Limited

15,003 domains

4 DigiCert Inc

15,001 domains

5 Amazon

13,132 domains

6 GlobalSign nv-sa

6,028 domains

7 GoDaddy.com, Inc.

4,967 domains

8 ZeroSSL

1,628 domains

9 Internet2

1,340 domains

10 Starfield Technologies, Inc.

1,232 domains

11 DigiCert, Inc.

1,049 domains

12 Actalis S.p.A.

966 domains

13 Microsoft Corporation

941 domains

14 Hellenic Academic and Research Institutions CA

853 domains

15 SSL Corporation

653 domains

16 Gandi SAS

577 domains

17 Entrust Limited

462 domains

18 Corporation Service Company

461 domains

19 Apple Inc.

449 domains

20 GoGetSSL

397 domains