Is Hellenic Academic and Research Institutions CA or Sectigo more popular?

Sectigo is used by more websites in our catalog: 1,161 use Hellenic Academic and Research Institutions CA and 27,172 use Sectigo.

Does Hellenic Academic and Research Institutions CA or Sectigo have higher-authority sites?

Hellenic Academic and Research Institutions CA sites have the higher median Ahrefs Domain Rating (Hellenic Academic and Research Institutions CA: 75, Sectigo: 38).

Is Hellenic Academic and Research Institutions CA or Sectigo growing faster?

Between 2026-06 and 2026-07, Hellenic Academic and Research Institutions CA went from 0.17% to 0.13% of all tracked sites, while Sectigo went from 3.7% to 3.1%. Hellenic Academic and Research Institutions CA is gaining ground faster in our index.

Can a site use both Hellenic Academic and Research Institutions CA and Sectigo?

No. A site runs a single SSL certificate authority, so Hellenic Academic and Research Institutions CA and Sectigo are mutually exclusive.

Hellenic Academic and Research Institutions CA vs Sectigo — Site Stats Database

Hellenic Academic and Research Institutions CA vs Sectigo

Q: Where does this Hellenic Academic and Research Institutions CA vs Sectigo 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.

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	Hellenic Academic and Research Institutions CA	Sectigo
Websites	1,161	27,172
Market share	0.14%	3.2%
Share of top 10K sites	0.00%

Share of top 100K sites	0.06%	3.4%

Rank	#11	#5

Median DR	75	38

Average DR	74	39

Median keywords	658	836

Median referring domains	5,129	621

Median domain age	26 yrs	18 yrs

Average domain age	24 yrs	18 yrs

Average monthly traffic	13,566	245,740

Combined monthly traffic	15,749,601	6,677,245,628

mpg.de
LanguageGerman
DR (Ahrefs)89
Total Keywords61,365
Referring Domains103,616
Domain Age
Traffic (Jun 2026)560,707
Traffic Trend
TechnologyHellenic Academic and Research Institutions CA
ucm.es
LanguageSpanish
DR (Ahrefs)84
Total Keywords21,955
Referring Domains58,616
Domain Age
Traffic (Jun 2026)520,587
Traffic Trend
TechnologyHellenic Academic and Research Institutions CA
eso.org
LanguageEnglish
DR (Ahrefs)82
Total Keywords18,717
Referring Domains32,647
Domain Age35 yrs
Traffic (Jun 2026)398,404
Traffic Trend
TechnologyHellenic Academic and Research Institutions CA
cun.es
LanguageSpanish
DR (Ahrefs)75
Total Keywords72,981
Referring Domains9,254
Domain Age
Traffic (Jun 2026)394,191
Traffic Trend
TechnologyHellenic Academic and Research Institutions CA
hal.science
LanguageEnglish
DR (Ahrefs)85
Total Keywords68,893
Referring Domains58,817
Domain Age
Traffic (Jun 2026)357,126
Traffic Trend
Technology
belgium.be
LanguageEnglish
DR (Ahrefs)90
Total Keywords12,117
Referring Domains64,675
Domain Age31 yrs
Traffic (Jun 2026)290,046
Traffic Trend
Technology
astro4edu.org
LanguageEnglish
DR (Ahrefs)48
Total Keywords15,128
Referring Domains1,030
Domain Age6 yrs
Traffic (Jun 2026)262,741
Traffic Trend
Technology
plantnet.org
LanguageEnglish
DR (Ahrefs)74
Total Keywords11,086
Referring Domains7,165
Domain Age12 yrs
Traffic (Jun 2026)234,714
Traffic Trend
Technology
bund.de
LanguageEnglish
DR (Ahrefs)94
Total Keywords99,279
Referring Domains462,466
Domain Age
Traffic (Jun 2026)224,202
Traffic Trend
TechnologyHellenic Academic and Research Institutions CA
habsburger.net
LanguageGerman
DR (Ahrefs)63
Total Keywords6,739
Referring Domains3,814
Domain Age17 yrs
Traffic (Jun 2026)188,745
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
mpg.de	German	89	61,365	103,616		560,707		Hellenic Academic and Research Institutions CA

espn.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords4,106,588
Referring Domains255,313
Domain Age31 yrs
Traffic (Jun 2026)1,425,283,167
Traffic Trend
TechnologySectigo
mayoclinic.org
LanguageEnglish
DR (Ahrefs)92
Total Keywords4,487,264
Referring Domains408,066
Domain Age29 yrs
Traffic (Jun 2026)452,253,303
Traffic Trend
Technology
timeanddate.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords1,349,121
Referring Domains155,919
Domain Age29 yrs
Traffic (Jun 2026)330,608,420
Traffic Trend
Technology
ebay.com
LanguageEnglish
DR (Ahrefs)93
Total Keywords31,445,213
Referring Domains435,246
Domain Age30 yrs
Traffic (Jun 2026)278,324,222
Traffic Trend
TechnologySectigo
cbssports.com
LanguageEnglish
DR (Ahrefs)85
Total Keywords2,087,935
Referring Domains92,040
Domain Age30 yrs
Traffic (Jun 2026)158,931,226
Traffic Trend
Technology
lowes.com
LanguageEnglish
DR (Ahrefs)88
Total Keywords4,826,414
Referring Domains158,334
Domain Age31 yrs
Traffic (Jun 2026)135,785,869
Traffic Trend
Technology
macys.com
Language
DR (Ahrefs)85
Total Keywords2,938,673
Referring Domains77,085
Domain Age32 yrs
Traffic (Jun 2026)109,583,460
Traffic Trend
TechnologySectigo
usps.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords571,869
Referring Domains122,171
Domain Age28 yrs
Traffic (Jun 2026)105,769,868
Traffic Trend
TechnologySectigo
marriott.com
Language
DR (Ahrefs)92
Total Keywords1,477,678
Referring Domains299,012
Domain Age33 yrs
Traffic (Jun 2026)93,141,722
Traffic Trend
Technology
nordstrom.com
Language
DR (Ahrefs)86
Total Keywords2,420,838
Referring Domains78,628
Domain Age31 yrs
Traffic (Jun 2026)73,400,583
Traffic Trend
Technology