Last updated · traffic data through Jun 2026 - refreshes automatically as new data lands.
Certainly is an SSL certificate authority.
776
Websites
0.1%
Share of SSL Authority
#14
Rank
of 1,047
63
Median DR
539,588,145
Combined monthly traffic
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Site Stats Database tracks 776 websites using Certainly. They carry a median Ahrefs Domain Rating of 63, higher than the 28 median across all tracked sites. The typical one is about 23 years old and ranks for 1,634 organic keywords. Over the last 2 months, the number we track grew 13%. Notable Certainly sites include akc.org, wikihow.com, ubiehealth.com. See plans and pricing.
Every figure in this section is based only on the websites Site Stats Database tracks, not the entire web. Market share, rank, totals, and medians all reflect our sample of 842,065 sites using an SSL certificate authority, not global market data.
+88 (+13%)
2026-06 → 2026-07
0.09% of tracked sites (was 0.12%)
Category
Top market
Top industry
Median referring domains
1,209
Median keywords
1,634
Median domain age
23 yrs
Adoption by audience size
Share of the most-visited sites we track that are websites using Certainly.
0.7%
Top 10K
67 of 10,000
0.2%
Top 100K
215 of 100,000
<0.1%
All tracked
776 of 880,858
Monthly snapshots of the sites in this segment. A new point is added every month. Website counts move when our catalog grows; the share of tracked sites is normalized, so it only moves when the prevalence of this segment changes.
Websites
776
2026-06 to 2026-07
Share of tracked sites
0.09%
2026-06 to 2026-07
Combined monthly traffic
539,588,145
2026-06 to 2026-07
Median page count
1,392
2026-06 to 2026-07
Median referring domains
1,208
2026-06 to 2026-07
Every ssl authority we track in this category, by number of websites.
The technologies most often detected alongside Certainly.
Site Stats Database tracks 776 websites using Certainly, enriched with full monthly traffic history, authority, keywords, referring domains, and the complete detected tech stack. We detect Certainly by crawling each site's HTML, response headers, and DNS; traffic and SEO metrics come from DataForSEO and Ahrefs. Everything refreshes at least monthly.
See plans & pricingCertainly is an SSL certificate authority. Site Stats Database detects it on the websites it tracks by analyzing each site's homepage, response headers, and DNS, and has currently found it on 776 websites.
Site Stats Database currently tracks 776 websites using Certainly. That makes it the #14 most common ssl authority out of 1,047 we detect in this category.
The most common are Android, News, and Video sites, and they are most common in United States and Spain. The breakdowns above show the full split across topics, markets, authority, and monetization, based on the 776 websites using Certainly we track.
Certainly is one of 1,047 ssl authority options Site Stats Database detects. The alternatives section lists the others by adoption, and you can compare Certainly head-to-head with any of them.
They tend to have stronger authority than the typical website: the median Certainly site has an Ahrefs Domain Rating of 63, higher than the 28 median across all sites Site Stats Database tracks.
Over the last 2 months, the number we track grew 13%, based on Site Stats Database's month-by-month snapshots of this group.
Traffic estimates, organic keywords, and authority come from DataForSEO; Domain Rating comes from Ahrefs' public endpoint; and technology detection (including Certainly) comes from Site Stats Database's own crawler, which inspects each site's HTML, headers, and infrastructure.
At least monthly. Traffic and rankings refresh every month, and technology detections are refreshed as sites are re-crawled, so this page always reflects the current 776 Certainly websites.
Yes. The complete, filterable list of all 776 Certainly websites, enriched with traffic history, authority, keywords, and the full tech stack, is available with a Site Stats Database plan.
Site Stats Database detects Certainly by crawling each site's homepage HTML, response headers, and DNS.
Citation
Site Stats Database. "Websites Using Certainly." Site Stats Database, July 1, 2026. https://sitestatsdb.com/technologies/ssl-certificates/certainly
| English |
| 91 |
| 5,580,639 |
| 404,808 |
| 22 yrs |
| 43,976,309 |
| Certainly |
| ubiehealth.com | English | 62 | 519,101 | 2,750 | 4 yrs | 31,668,228 | Certainly |
| ufc.com | English | 81 | 103,879 | 28,384 | 31 yrs | 18,875,616 | Certainly |
| bible.com | English | 90 | 681,273 | 50,220 | 31 yrs | 17,974,483 | Certainly |
| bathandbodyworks.com | English | 77 | 89,451 | 23,742 | 28 yrs | 16,958,001 | Certainly |
| time.com | English | 92 | 1,667,220 | 590,607 | 32 yrs | 15,941,582 | Certainly |
| aad.org | English | 90 | 359,999 | 56,366 | 30 yrs | 15,847,168 | Certainly |
| yale.edu | English | 91 | 637,409 | 270,573 | 39 yrs | 14,257,045 | Certainly |
| arizona.edu | English | 90 | 497,891 | 140,110 | 40 yrs | 9,982,834 | Certainly |
| viator.com | 89 | 967,020 | 56,403 | 27 yrs | 9,888,740 | Certainly |
| kingarthurbaking.com | English | 83 | 341,317 | 31,032 | 7 yrs | 9,534,553 | Certainly |