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

Hellenic Academic and Research Institutions CA is used by more websites in our catalog: 1,161 use Hellenic Academic and Research Institutions CA and 348 use Microsoft.

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

Microsoft sites have the higher median Ahrefs Domain Rating (Hellenic Academic and Research Institutions CA: 75, Microsoft: 92).

Is Hellenic Academic and Research Institutions CA or Microsoft 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 Microsoft went from 0.04% to 0.04%. Microsoft is gaining ground faster in our index.

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

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

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

Hellenic Academic and Research Institutions CA vs Microsoft

Q: Where does this Hellenic Academic and Research Institutions CA vs Microsoft 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	Microsoft
Websites	1,161	348
Market share	0.14%	0.04%
Share of top 10K sites	0.00%

Share of top 100K sites	0.06%	0.07%

Rank	#11	#22

Median DR	75	92

Average DR	74	75

Median keywords	658	890

Median referring domains	5,129	382

Median domain age	26 yrs	22 yrs

Average domain age	24 yrs	21 yrs

Average monthly traffic	13,566	942,292

Combined monthly traffic	15,749,601	327,917,680

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

microsoft.com
LanguageEnglish
DR (Ahrefs)96
Total Keywords3,038,378
Referring Domains2,803,353
Domain Age35 yrs
Traffic (Jun 2026)168,600,293
Traffic Trend
TechnologyMicrosoft
msn.com
LanguageEnglish
DR (Ahrefs)92
Total Keywords4,221,283
Referring Domains642,086
Domain Age31 yrs
Traffic (Jun 2026)33,417,289
Traffic Trend
TechnologyMicrosoft
xbox.com
LanguageEnglish
DR (Ahrefs)90
Total Keywords545,652
Referring Domains130,735
Domain Age29 yrs
Traffic (Jun 2026)25,155,602
Traffic Trend
TechnologyMicrosoft
cloud.microsoft
LanguageEnglish
DR (Ahrefs)92
Total Keywords155,714
Referring Domains128,832
Domain Age10 yrs
Traffic (Jun 2026)18,365,324
Traffic Trend
Technology
live.com
Language
DR (Ahrefs)93
Total Keywords49,818
Referring Domains917,242
Domain Age31 yrs
Traffic (Jun 2026)17,710,146
Traffic Trend
TechnologyMicrosoft
minecraft.net
Language
DR (Ahrefs)89
Total Keywords244,170
Referring Domains73,149
Domain Age17 yrs
Traffic (Jun 2026)12,267,496
Traffic Trend
Technology
office.com
LanguageEnglish
DR (Ahrefs)94
Total Keywords116,220
Referring Domains911,089
Domain Age27 yrs
Traffic (Jun 2026)11,200,894
Traffic Trend
Technology
bing.com
LanguageEnglish
DR (Ahrefs)93
Total Keywords142,155
Referring Domains600,638
Domain Age30 yrs
Traffic (Jun 2026)11,042,257
Traffic Trend
TechnologyMicrosoft
office365.com
Language
DR (Ahrefs)92
Total Keywords11,374
Referring Domains90,088
Domain Age21 yrs
Traffic (Jun 2026)4,520,814
Traffic Trend
Technology
sharepoint.com
Language
DR (Ahrefs)93
Total Keywords116,689
Referring Domains315,187
Domain Age27 yrs
Traffic (Jun 2026)1,942,027
Traffic Trend
Technology