Is Let's Encrypt or SSL.com more popular?

Let's Encrypt is used by more websites in our catalog: 466,882 use Let's Encrypt and 304 use SSL.com.

Does Let's Encrypt or SSL.com have higher-authority sites?

SSL.com sites have the higher median Ahrefs Domain Rating (Let's Encrypt: 23, SSL.com: 40).

Is Let's Encrypt or SSL.com growing faster?

Between 2026-06 and 2026-07, Let's Encrypt went from 59% to 53% 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 Let's Encrypt and SSL.com?

No. A site runs a single SSL certificate authority, so Let's Encrypt and SSL.com are mutually exclusive.

Where does this Let's Encrypt 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.

Let's Encrypt vs SSL.com — Site Stats Database

Let's Encrypt 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	Let's Encrypt	SSL.com
Websites	466,882	304
Market share	55%	0.04%
Share of top 10K sites	30%	0.03%

Rank	#1	#24

Median DR	23	40

Average DR	27	40

Median keywords	849	1,162

Median referring domains	270	638

Median domain age	12 yrs	21 yrs

Average domain age	14 yrs	20 yrs

Average monthly traffic	108,181	75,359

Combined monthly traffic	50,507,691,242	22,909,202

wikipedia.org
LanguageEnglish
DR (Ahrefs)97
Total Keywords61,690,521
Referring Domains6,594,435
Domain Age25 yrs
Traffic (Jun 2026)11,208,499,330
Traffic Trend
TechnologyLet's Encrypt
x.com
LanguageEnglish
DR (Ahrefs)97
Total Keywords15,888,487
Referring Domains4,249,759
Domain Age33 yrs
Traffic (Jun 2026)354,173,918
Traffic Trend
TechnologyLet's Encrypt
nfl.com
LanguageEnglish
DR (Ahrefs)89
Total Keywords947,630
Referring Domains147,040
Domain Age30 yrs
Traffic (Jun 2026)275,712,888
Traffic Trend
TechnologyLet's Encrypt
nba.com
LanguageEnglish
DR (Ahrefs)90
Total Keywords758,560
Referring Domains186,338
Domain Age31 yrs
Traffic (Jun 2026)239,244,892
Traffic Trend
TechnologyLet's Encrypt
stock.adobe.com
Language
DR (Ahrefs)96
Total Keywords3,301,936
Referring Domains116,531
Domain Age39 yrs
Traffic (Jun 2026)225,699,793
Traffic Trend
Technology
weather.gov
LanguageEnglish
DR (Ahrefs)91
Total Keywords1,098,961
Referring Domains132,221
Domain Age27 yrs
Traffic (Jun 2026)221,232,646
Traffic Trend
Technology
expedia.com
Language
DR (Ahrefs)90
Total Keywords4,797,516
Referring Domains112,144
Domain Age30 yrs
Traffic (Jun 2026)208,730,561
Traffic Trend
Technology
target.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords10,174,393
Referring Domains208,795
Domain Age29 yrs
Traffic (Jun 2026)204,573,119
Traffic Trend
Technology
vocabulary.com
LanguageEnglish
DR (Ahrefs)81
Total Keywords2,454,757
Referring Domains42,680
Domain Age29 yrs
Traffic (Jun 2026)192,093,469
Traffic Trend
Technology
allrecipes.com
Language
DR (Ahrefs)89
Total Keywords3,491,845
Referring Domains151,904
Domain Age27 yrs
Traffic (Jun 2026)166,334,891
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
wikipedia.org	English	97	61,690,521	6,594,435	25 yrs	11,208,499,330		Let's Encrypt

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