Is Certum or SSL.com more popular?

Certum is used by more websites in our catalog: 579 use Certum and 304 use SSL.com.

Does Certum or SSL.com have higher-authority sites?

Certum sites have the higher median Ahrefs Domain Rating (Certum: 55, SSL.com: 40).

Is Certum or SSL.com growing faster?

Between 2026-06 and 2026-07, Certum went from 0.08% to 0.07% of all tracked sites, while SSL.com went from 0.04% to 0.03%. SSL.com is gaining ground faster in our index.

Can a site use both Certum and SSL.com?

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

Where does this Certum vs SSL.com 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 SSL.com — Site Stats Database

Certum vs SSL.com

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	SSL.com
Websites	579	304
Market share	0.07%	0.04%
Share of top 10K sites	0.00%	0.03%
Share of top 100K sites

Rank	#17	#24

Median DR	55	40

Average DR	52	40

Median keywords	396	1,162

Median referring domains	1,388	638

Median domain age	15 yrs	21 yrs

Average domain age	15 yrs	20 yrs

Average monthly traffic	15,804	75,359

Combined monthly traffic	9,150,719	22,909,202

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
Technology
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

kaiserpermanentejobs.org
LanguageEnglish
DR (Ahrefs)55
Total Keywords83,183
Referring Domains2,011
Domain Age25 yrs
Traffic (Jun 2026)2,606,291
Traffic Trend
TechnologySSL.com
lifefitness.com
LanguageEnglish
DR (Ahrefs)75
Total Keywords34,386
Referring Domains8,945
Domain Age30 yrs
Traffic (Jun 2026)2,197,238
Traffic Trend
Technology
mymovies.it
LanguageItalian
DR (Ahrefs)76
Total Keywords148,009
Referring Domains28,855
Domain Age25 yrs
Traffic (Jun 2026)1,300,041
Traffic Trend
Technology
stampsforever.com
LanguageEnglish
DR (Ahrefs)52
Total Keywords11,513
Referring Domains978
Domain Age4 yrs
Traffic (Jun 2026)929,135
Traffic Trend
Technology
philasd.org
LanguageEnglish
DR (Ahrefs)72
Total Keywords34,338
Referring Domains6,406
Domain Age21 yrs
Traffic (Jun 2026)815,314
Traffic Trend
Technology
trashcansunlimited.com
LanguageEnglish
DR (Ahrefs)38
Total Keywords18,364
Referring Domains1,191
Domain Age20 yrs
Traffic (Jun 2026)660,726
Traffic Trend
Technology
delottery.com
LanguageEnglish
DR (Ahrefs)72
Total Keywords24,576
Referring Domains4,157
Domain Age27 yrs
Traffic (Jun 2026)640,192
Traffic Trend
Technology
globalgolf.com
LanguageEnglish
DR (Ahrefs)54
Total Keywords64,385
Referring Domains4,725
Domain Age28 yrs
Traffic (Jun 2026)565,048
Traffic Trend
Technology
enchantedparks.com
LanguageEnglish
DR (Ahrefs)45
Total Keywords10,479
Referring Domains313
Domain Age12 yrs
Traffic (Jun 2026)552,145
Traffic Trend
Technology
foundever.com
LanguageEnglish
DR (Ahrefs)72
Total Keywords8,573
Referring Domains4,651
Domain Age16 yrs
Traffic (Jun 2026)539,337
Traffic Trend
Technology