// advertising
Websites that use Rubicon Project in 2026
We track 388 websites running Rubicon Project across 24 industries and 16 countries. Browse a sample of 100 matched company profiles below, each with industry, location, and verified contact data.
- industries
- 24
- countries
- 16
- websites tracked
- 388
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Companies using Rubicon Project
Showing 25 of 100
| Website | Company | Industry | HQ |
|---|---|---|---|
| comoxvalleyrecord.com | Sports Teams and Clubs |  CA | |
| thesmokinggun.com | Information Services |  US | |
| kelownacapnews.com | Periodical Publishing | CA | |
| drummondhouseplans.com | Architecture and Planning | CA | |
| farnhamherald.com | Writing and Editing |  GB | |
| stratford-herald.com | media production | GB | |
| livehindustan.com | Media Production |  IN | |
| revelstokereview.com | Writing and Editing | CA | |
| olx.com.br | Information Technology and Services |  BR | |
| shueisha.co.jp | publishing |  JP | |
| squamishchief.com | Marketing Services | CA | |
| sylvanlakenews.com | Environmental Services | CA | |
| southhams-today.co.uk | Periodical Publishing | GB | |
| pipestoneflyer.ca | CA | ||
| vernonmorningstar.com | Periodical Publishing | CA | |
| telemundo47.com | Telecommunications | US | |
| brightsites.co.uk | Information Services | GB | |
| bridgebase.com | Information Technology and Services | US | |
| courrierdeportneuf.com | Periodical Publishing | CA | |
| theprogress.com | Periodical Publishing | CA | |
| cowichanvalleycitizen.com | CA | ||
| mapleridgenews.com | Retail | CA | |
| careerbuilder.com | Information Technology and Services | US | |
| hvg.hu | Periodical Publishing |  HU | |
| metoffice.gov.uk | Environmental Services | GB |
Refine to your ICP
Narrow these 100 companies down to the ones that match your ideal customer profile.
No credit card required.
Industry breakdown
How many websites use Rubicon Project?
We track 388 websites that use Rubicon Project in 2026. Those sites span 24 industries and 16 countries. The crawler re-checks each domain daily. So the count moves as sites adopt Rubicon Project or drop it.
Rubicon Project belongs to the Advertising category. Sites in that category tend to share a similar stack. As a result, they often share buying patterns too.
The table above shows a sample of 100 matched companies. Each row carries an industry, a country, and a live domain. You can search it, sort it, and export it.
Which industries use Rubicon Project most?
Adoption is not spread evenly. Instead, a few industries account for most of the matched sample:
- Periodical Publishing19%
- Broadcast Media Production and Distribution11%
- Information Technology and Services7.000000000000001%
- book and periodical publishing4%
- publishing4%
Periodical Publishing leads that list. However, the long tail matters just as much. Adoption reaches 24 industries in total. So you can narrow the list to the segment you sell into.
Where are websites that use Rubicon Project based?
The matched companies sit in 16 countries. These lead the sample:
- Canada 47
- United States 22
- United Kingdom 10
- Japan 5
- India 3
Canada is the largest single market in this sample. Because the country is stored per row, you can filter before you export. That keeps your outreach inside one timezone and one legal regime.
How to find websites that use Rubicon Project
Start with the table above. Then follow these four steps to turn it into an outreach list:
- Filter the sample. Narrow by industry or country until the rows match your ideal customer profile.
- Export the domains. Share the page to unlock the CSV, or sign in for the full dataset.
- Find the people. Run each domain through Domain Search to pull every work email behind it.
- Verify before you send. Pass the results through the Email Verifier so your bounce rate stays low.
Working at volume? Push the whole export through Bulk Tasks instead, or call the Domain Search API directly from your own stack.
Frequently asked questions
How many websites use Rubicon Project?
We track 388 websites that use Rubicon Project. The index refreshes daily, so the number shifts as sites adopt or drop it. Of those, 100 are matched to a company profile with industry, location, and contact data.
Can I download the list of websites that use Rubicon Project?
Yes. Share the page on LinkedIn to unlock a CSV export of the matched sample, with no signup required. For the full dataset and verified email addresses, create a free Tomba account.
Which industries use Rubicon Project the most?
Periodical Publishing leads the matched sample, at 19% of companies. In total, websites that use Rubicon Project span 24 industries.
How fresh is the Rubicon Project data?
Our crawler re-checks technology signals daily. So a site that removes Rubicon Project drops out of the index, and a new adopter appears without you refreshing anything.
Can I get email addresses for websites that use Rubicon Project?
Yes. Every domain in the table can be enriched with verified work emails and direct phone numbers. Run a single domain through Domain Search, or push the whole export through Bulk Tasks.
// get this list by api
Companies using Rubicon Project, one request away
Filter the company search by technology, then find and verify the people at each company. The technology filter is available on paid plans; 50 companies per page.
/reveal/searchCompanies that match a plain-language query or filters1 search credit02GET/domain-searchThe email addresses at a company, with names, roles and the company profile1 search credit per 10 results03GET/email-verifierWhether an address is deliverable: syntax, MX, SMTP, catch-all and greylisting checks1 verification creditcurl -X POST "https://api.tomba.io/v1/reveal/search" \
-H "X-Tomba-Key: $TOMBA_API_KEY" \
-H "X-Tomba-Secret: $TOMBA_SECRET_KEY" \
-H "Content-Type: application/json" \
-d '{"filters":{"technologies":{"include":["Rubicon Project"]}},"page":1}'const res = await fetch("https://api.tomba.io/v1/reveal/search", {
method: "POST",
headers: {
"X-Tomba-Key": process.env.TOMBA_API_KEY,
"X-Tomba-Secret": process.env.TOMBA_SECRET_KEY,
"Content-Type": "application/json"
},
body: JSON.stringify({"filters":{"technologies":{"include":["Rubicon Project"]}},"page":1})
});
const { data } = await res.json(); // data.companiesimport os, requests
res = requests.post(
"https://api.tomba.io/v1/reveal/search",
headers={
"X-Tomba-Key": os.environ["TOMBA_API_KEY"],
"X-Tomba-Secret": os.environ["TOMBA_SECRET_KEY"],
},
json={"filters":{"technologies":{"include":["Rubicon Project"]}},"page":1},
)
companies = res.json()["data"]["companies"]// technologies
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