Is Certum or Entrust more popular?

Entrust is used by more websites in our catalog: 579 use Certum and 1,619 use Entrust.

Does Certum or Entrust have higher-authority sites?

Entrust sites have the higher median Ahrefs Domain Rating (Certum: 55, Entrust: 70).

Is Certum or Entrust growing faster?

Between 2026-06 and 2026-07, Certum went from 0.08% to 0.07% of all tracked sites, while Entrust went from 0.26% to 0.18%. Certum is gaining ground faster in our index.

Can a site use both Certum and Entrust?

No. A site runs a single SSL certificate authority, so Certum and Entrust are mutually exclusive.

Where does this Certum vs Entrust data come from?

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.

Certum vs Entrust — Site Stats Database

Certum vs Entrust

A side-by-side comparison of two ssl certificate authorities, based on the 842,065 SSL Authority sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	Certum	Entrust
Websites	579	1,619
Market share	0.07%	0.19%
Share of top 10K sites	0.00%	1.2%

Rank	#17	#10

Median DR	55	70

Average DR	52	64

Median keywords	396	1,699

Median referring domains	1,388	1,654

Median domain age	15 yrs	25 yrs

Average domain age	15 yrs	23 yrs

Average monthly traffic	15,804	614,107

Combined monthly traffic	9,150,719	994,238,977

auschwitz.org
LanguagePolish
DR (Ahrefs)76
Total Keywords9,509
Referring Domains11,787
Domain Age25 yrs
Traffic (Jun 2026)703,253
Traffic Trend
TechnologyCertum
simcosplay.com
LanguageEnglish
DR (Ahrefs)21
Total Keywords20,259
Referring Domains1,668
Domain Age7 yrs
Traffic (Jun 2026)683,447
Traffic Trend
Technology
uhomes.com
LanguageEnglish
DR (Ahrefs)55
Total Keywords119,316
Referring Domains2,552
Domain Age23 yrs
Traffic (Jun 2026)570,251
Traffic Trend
TechnologyCertum
abadis.ir
LanguagePersian
DR (Ahrefs)70
Total Keywords110,449
Referring Domains6,192
Domain Age
Traffic (Jun 2026)490,697
Traffic Trend
TechnologyCertum
floorplancreator.net
LanguageEnglish
DR (Ahrefs)42
Total Keywords4,628
Referring Domains987
Domain Age13 yrs
Traffic (Jun 2026)460,176
Traffic Trend
Technology
anchenggy.com
LanguageEnglish
DR (Ahrefs)27
Total Keywords6,466
Referring Domains619
Domain Age12 yrs
Traffic (Jun 2026)332,303
Traffic Trend
Technology
igmetall.de
LanguageGerman
DR (Ahrefs)75
Total Keywords306
Referring Domains9,381
Domain Age
Traffic (Jun 2026)310,727
Traffic Trend
TechnologyCertum
mywanderlust.pl
LanguageEnglish
DR (Ahrefs)47
Total Keywords9,706
Referring Domains2,952
Domain Age13 yrs
Traffic (Jun 2026)283,835
Traffic Trend
Technology
scirp.org
LanguageEnglish
DR (Ahrefs)86
Total Keywords90,804
Referring Domains62,358
Domain Age18 yrs
Traffic (Jun 2026)272,944
Traffic Trend
TechnologyCertum
mfa.gov.ir
Language
DR (Ahrefs)72
Total Keywords3,297
Referring Domains5,427
Domain Age
Traffic (Jun 2026)267,826
Traffic Trend
TechnologyCertum

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
auschwitz.org	Polish	76	9,509	11,787	25 yrs	703,253		Certum

irs.gov
LanguageEnglish
DR (Ahrefs)93
Total Keywords973,833
Referring Domains280,852
Domain Age28 yrs
Traffic (Jun 2026)75,413,891
Traffic Trend
TechnologyEntrust
aa.com
Language
DR (Ahrefs)85
Total Keywords667,613
Referring Domains45,730
Domain Age28 yrs
Traffic (Jun 2026)66,127,031
Traffic Trend
TechnologyEntrust
southwest.com
LanguageEnglish
DR (Ahrefs)83
Total Keywords374,436
Referring Domains36,572
Domain Age29 yrs
Traffic (Jun 2026)45,673,737
Traffic Trend
Technology
bls.gov
LanguageEnglish
DR (Ahrefs)92
Total Keywords453,494
Referring Domains223,052
Domain Age28 yrs
Traffic (Jun 2026)35,695,639
Traffic Trend
TechnologyEntrust
fda.gov
Language
DR (Ahrefs)92
Total Keywords957,018
Referring Domains331,983
Domain Age25 yrs
Traffic (Jun 2026)31,615,435
Traffic Trend
TechnologyEntrust
archives.gov
LanguageEnglish
DR (Ahrefs)91
Total Keywords509,922
Referring Domains166,804
Domain Age25 yrs
Traffic (Jun 2026)28,426,719
Traffic Trend
Technology
michaels.com
LanguageEnglish
DR (Ahrefs)83
Total Keywords1,192,309
Referring Domains71,560
Domain Age31 yrs
Traffic (Jun 2026)27,717,581
Traffic Trend
Technology
tubitv.com
LanguageEnglish
DR (Ahrefs)84
Total Keywords999,312
Referring Domains37,176
Domain Age12 yrs
Traffic (Jun 2026)27,699,649
Traffic Trend
TechnologyEntrust
adidas.com
Language
DR (Ahrefs)87
Total Keywords485,977
Referring Domains77,733
Domain Age30 yrs
Traffic (Jun 2026)27,217,066
Traffic Trend
TechnologyEntrust
dominos.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords193,164
Referring Domains21,426
Domain Age32 yrs
Traffic (Jun 2026)26,430,242
Traffic Trend
TechnologyEntrust