Let's Encrypt
Nginx
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Sectigo
Starfield Tech
Google Trust Services
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AWS Certificate Manager
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ZeroSSL
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Sales outreach
All 46,231 of these sites already run Certainly, with the primary and secondary education segment leading at 755 sites. Pitch the products and services that fit that exact stack.
Websites using Certainly
Security & Compliance EV SSL Certificates Visit website
Certainly is Fastly’s publicly-trusted Certification Authority (CA) for managing TLS certificates.
Up to 1M sites per list · Segment by country & TLD to cover the full footprint · Unlimited report rebuilds for 1 month
- Live websites detected
- 46,231
- Countries with usage
- 130
- Top market: United States
- 🇺🇸 39.3%
Certainly global heatmap
darker = more sitesCertainly usage by country
by sites detected-
01 🇺🇸 United States 16,243 39.3%
-
02 🇳🇱 Netherlands 13,391 32.4%
-
03 🇯🇵 Japan 1,950 4.7%
-
04 🇫🇮 Finland 1,852 4.5%
-
05 🇨🇦 Canada 1,518 3.7%
-
06 🇬🇧 United Kingdom 804 1.9%
-
07 🇩🇪 Germany 754 1.8%
-
08 🇫🇷 France 664 1.6%
-
09 🇸🇪 Sweden 480 1.2%
-
10 🇦🇺 Australia 315 0.8%
And 120 more countries in the full dataset.
Need every Certainly site in one market? Unlock Certainly once and rebuild filtered reports as often as you like for a month: by country, TLD, or stack combination, each with up to 20 data points per site.
Start from $39/moCertainly usage by country group
by sites detected-
01 English-Speaking Countries 28 countries 19,344 46.8%
-
02 Western Europe 22 countries 19,246 46.6%
-
03 European Union (EU) 27 countries 18,441 44.6%
-
04 North America 4 countries 17,763 43%
-
05 Benelux 3 countries 13,523 32.7%
-
06 Asia-Pacific (APAC) 25 countries 3,117 7.5%
-
07 Nordics 6 countries 2,756 6.7%
-
08 East Asia 6 countries 2,305 5.6%
-
09 French-Speaking Countries 12 countries 976 2.4%
-
10 DACH 4 countries 973 2.4%
Country groups overlap: a country can belong to several at once (Germany counts toward Europe, Western Europe, the EU and DACH). Percentages are each group's share of the 41,324 sites with a known country, so they describe overlapping views of the same data and do not add up to 100%.
Top websites using Certainly
by popularity| # | Website | Popularity | StackSpend | Country | TLD |
|---|---|---|---|---|---|
| 01 |
 mozilla.org
|
102 | $15.67K+ | 🇺🇸 United States | org |
| 02 |
 nytimes.com
|
154 | $1.36M+ | 🇺🇸 United States | com |
| 03 | fastly-edge.com | 280 | $13+ | 🇺🇳 - | com |
| 04 |
 stanford.edu
|
362 | $69.2K+ | 🇺🇸 United States | edu |
| 05 |
 time.com
|
516 | $99.2K+ | 🇺🇸 United States | com |
| 06 |
 ft.com
|
523 | $1.02M+ | 🇬🇧 United Kingdom | com |
| 07 |
 arxiv.org
|
590 | $6.52K+ | 🇺🇸 United States | org |
| 08 | fandom.com | 603 | $1.69M+ | 🇺🇸 United States | com |
| 09 |
 mdpi.com
|
674 | $284K+ | 🇨🇭 Switzerland | com |
| 10 |
 ameblo.jp
|
791 | $5.66K+ | 🇯🇵 Japan | jp |
| 11 | costco.com | 967 | $365K+ | 🇺🇸 United States | com |
| 12 |
 sofascore.com
|
991 | $5.04K+ | 🇭🇷 Croatia | com |
| 13 | newsweek.com | 998 | $2.51M+ | 🇺🇸 United States | com |
| 14 |
 abc.es
|
1,034 | $638K+ | 🇪🇸 Spain | es |
| 15 |
 yale.edu
|
1,114 | $346K+ | 🇺🇸 United States | edu |
| 16 |
 cookpad.com
|
1,128 | $23.75K+ | 🇬🇧 United Kingdom | com |
| 17 | instructure.com | 1,148 | $370K+ | 🇺🇸 United States | com |
| 18 |
 rightmove.co.uk
|
1,178 | $26.1K+ | 🇬🇧 United Kingdom | uk |
| 19 |
 ntppool.org
|
1,333 | $16.45K+ | 🇺🇸 United States | org |
| 20 | meetup.com | 1,911 | $6.65K+ | 🇺🇸 United States | com |
This is 20 of 46,231 websites. Download up to 1M sites per list as CSV, enriched with firmographics.
Companies using Certainly
sample, enriched| Company | Website | Employees | Industry | Country | Founded |
|---|---|---|---|---|---|
| Extra Gum |
 extragum.com
|
- | - | 🇺🇳 - | - |
| Somerset ISD |
 sisdk12.net
|
5001-10000 | Primary and Secondary Education | 🇺🇸 United States | 1922 |
| South Brunswick Public Schools |
 sbschools.org
|
1001-5000 | Education Administration Programs | 🇺🇸 United States | - |
| Eno River Academy |
 enoriveracademy.org
|
51-200 | Primary and Secondary Education | 🇺🇸 United States | - |
| Voya Financial |
 voya.com
|
10001+ | Financial Services | 🇺🇸 United States | 2014 |
| Oscoda Area Schools |
 oscodaschools.org
|
201-500 | Education Administration Programs | 🇺🇸 United States | 1890 |
| Saka |
 saka.fi
|
501-1000 | Retail | 🇫🇮 Finland | 2015 |
| Booklinker |
 booklinker.com
|
11-50 | IT Services and IT Consulting | 🇺🇳 - | - |
| SEPHARDIC COMMUNITY SHAARE MIZRAH |
 ohelshalomchicago.org
|
1-10 | - | 🇺🇸 United States | - |
| LEER Group |
 leer.com
|
1001-5000 | Motor Vehicle Manufacturing | 🇺🇸 United States | - |
| Cannon Falls High School |
 cannonfallsschools.com
|
51-200 | Education Administration Programs | 🇺🇸 United States | - |
| Vail Unified School District |
 vailschooldistrict.org
|
501-1000 | Primary and Secondary Education | 🇺🇳 - | 1903 |
| Brakes UK |
 brake.co.uk
|
5001-10000 | Food and Beverage Services | 🇬🇧 United Kingdom | - |
| Nordea |
 nordea.com
|
10001+ | Banking | 🇫🇮 Finland | - |
| Bodet Time |
 bodet-time.com
|
201-500 | IT Services and IT Consulting | 🇫🇷 France | 1950 |
| Triangle Lake School |
 blachly.k12.or.us
|
1-10 | - | 🇺🇸 United States | - |
| ChimneyTEK |
 chimneytek.com
|
11-50 | Construction | 🇺🇸 United States | 1994 |
| Bora Cabinetry |
 boracabinetry.com
|
- | - | 🇺🇸 United States | - |
| Anne Arundel County Public Schools |
 aacps.org
|
10001+ | Education Management | 🇺🇸 United States | - |
| The Wellington Advertiser |
 wellingtonadvertiser.com
|
11-50 | newspapers | 🇨🇦 Canada | 1968 |
| OOJA Displays |
 ooja.fi
|
1-10 | Design Services | 🇺🇳 - | - |
| San Antonio Isd |
 saisd.net
|
5001-10000 | Education Management | 🇺🇸 United States | 1899 |
| All Current Electrical Sales |
 allcurrent.com
|
51-200 | Electrical Equipment Manufacturing | 🇺🇸 United States | 1981 |
| Pet Paradise Resort |
 petparadise.com
|
1001-5000 | Hospitality | 🇺🇸 United States | 2002 |
| Association Pour L'emploi Des Cadres |
 apec.fr
|
501-1000 | Human Resources | 🇫🇷 France | 1966 |
| Harjun Paperi |
 harjunpaperi.fi
|
- | - | 🇫🇮 Finland | - |
| Bennington-rutland Supervisory Union… |
 brsu.org
|
201-500 | primary/secondary education | 🇺🇸 United States | - |
| Klein Isd |
 kleinisd.net
|
5001-10000 | primary/secondary education | 🇺🇸 United States | 1928 |
| Linden Public Schools |
 lindenps.org
|
501-1000 | Primary and Secondary Education | 🇺🇸 United States | - |
| South Plainfield Public Schools |
 spboe.org
|
51-200 | Education Administration Programs | 🇺🇸 United States | - |
| University Of Pittsburgh |
 pitt.edu
|
10001+ | Higher Education | 🇺🇸 United States | 1787 |
| City Of Westlake Ohio |
 cityofwestlake.org
|
201-500 | Government Administration | 🇺🇸 United States | 1811 |
| Qa Ltd |
 qa.com
|
1001-5000 | Education Management | 🇬🇧 United Kingdom | 1985 |
| VersicherungsTech Magazin |
 versicherungstech-magazin.de
|
1-10 | Insurance | 🇩🇪 Germany | 2025 |
| Sheridan County School District #3 |
 sheridan3.com
|
11-50 | Primary and Secondary Education | 🇺🇸 United States | 1921 |
| Gary Bandy |
 garybandy.co.uk
|
- | - | 🇬🇧 United Kingdom | - |
| Brownsville Independent School District |
 bisd.us
|
5001-10000 | Education Management | 🇺🇸 United States | 1915 |
| Rocket Legal Professional Services | rocketlegalproservices.com | 11-50 | Law Practice | 🇺🇳 - | - |
| Usd 405 |
 usd405.com
|
- | - | 🇺🇳 - | - |
| Broken Arrow Public Schools |
 baschools.org
|
1001-5000 | Education Management | 🇺🇸 United States | 1904 |
A sample of enriched company profiles. Full exports include company, social, and spend signals on every domain.
Certainly usage by industry
by TLD segment-
01 Primary and Secondary Education 755 18.6%
-
02 Education Administration Programs 692 17%
-
03 Education Management 335 8.2%
-
04 Education Management 239 5.9%
-
05 Software Development 232 5.7%
-
06 primary/secondary education 221 5.4%
-
07 Technology, Information and Internet 184 4.5%
-
08 IT Services and IT Consulting 179 4.4%
-
09 Education 150 3.7%
-
10 Business Consulting and Services 138 3.4%
Certainly industry distribution chart
share by domain segmentCertainly users by company revenue
2,741 companiesTechnologies related to Certainly
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Selling Let's Encrypt, Nginx, or another EV SSL Certificates product? These 46.23K Certainly users are your displacement audience, filterable by country and company size.
Market research
Top markets for Certainly: United States (39.3%), Netherlands (32.4%), Japan (4.7%). Size the EV SSL Certificates market by geography before you build or invest.
Free for non-profits, academia & data journalists - non-commercial and public-interest use, on request.
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