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Companies that use Duo

3,623 companies use Duo, as of October 2026.

Duo: MFA and device trust. We've found 3,623 companies using Duo, most often in Healthcare (18%) and IT Services (14%), typically with 51–200 employees and 69% based in United States.

Customers3,623companies use it
Most popular withBanking3.3× more likely than average
Typical customer51–200employees · mostly United States
  1. Ciscocisco.comInfrastructure Platform · United States
    10,000+ employeesSeen Oct 2026
  2. Namecheap, INCnamecheap.comIT Services · United States
    1,001–5,000 employeesSeen Oct 2026
  3. NVIDIA - World Leader in Artificial Intelligence Computingnvidia.comSemiconductor · United States
    10,000+ employeesSeen Oct 2026
  4. Tripadvisortripadvisor.comTourism · United States
    1–10 employeesSeen Oct 2026
  5. Sagesagepub.com
    Seen Oct 2026
  6. Uberuber.comPeer-to-peer Ridesharing · United States
    10,000+ employeesSeen Oct 2026
  7. Lenovolenovo.comComputer Hardware · China
    10,000+ employeesSeen Oct 2026
  8. Lowe'slowes.comHardware Store · United States
    Seen Oct 2026
  9. Caixacaixa.gov.brFinancial Services · Brazil
    10,000+ employeesSeen Oct 2026
  10. Garmin Official Sitegarmin.comMaritime
    1–10 employeesSeen Oct 2026
  11. The Economisteconomist.comNewspapers · United Kingdom
    1,001–5,000 employeesSeen Oct 2026
  12. Pt. Indosat Tbkioh.co.idTelecommunications · Indonesia
    1,001–5,000 employeesSeen Oct 2026
  13. Acm Women Indiaacm.orgSoftware
    10,000+ employeesSeen Oct 2026
  14. Ucsd Technology Transfer Officeucsd.eduInternet · United States
    10,000+ employeesSeen Oct 2026
  15. Sony Electronics, Inc.sony.comConsumer Electronics · United States
    10,000+ employeesSeen Oct 2026
  16. Asu Clfsaasu.eduHigher Education · United States
    10,000+ employeesSeen Oct 2026
  17. Constant Contactconstantcontact.comSoftware As a Service · United States
    1,001–5,000 employeesSeen Oct 2026
  18. Cymrucymru.com
    Seen Oct 2026
  19. Nyu Office Of The Provostnyu.eduHigher Education
    10,000+ employeesSeen Oct 2026
  20. CrowdStrike Servicescrowdstrike.comComputer Security · United States
    5,001–10,000 employeesSeen Oct 2026

Showing 40 of 3,780

Duo customers also use

How much more likely Duo customers are to use each tool than the average company.

What kind of companies use Duo

Segments where Duo customers are more common than among all the companies we track.

  • Banking5% of customers3.3×more likely
  • 5,001–10,000 employees3% of customers2.3×more likely
  • 10,000+ employees5% of customers2.2×more likely
  • 1,001–5,000 employees16% of customers2.2×more likely
  • Healthcare14% of customers1.8×more likely
  • Insurance4% of customers1.8×more likely
  • Financial Services9% of customers1.5×more likely
  • 201–1,000 employees31% of customers1.3×more likely

Industry

  1. Healthcare18%
  2. IT Services14%
  3. Financial Services11%
  4. Education Management6%
  5. Banking6%
  6. Insurance5%
  7. Retail5%
  8. Consumer Goods4%

Company size

  1. 1–10 employees1%
  2. 11–50 employees3%
  3. 51–200 employees41%
  4. 201–1,000 employees31%
  5. 1,001–5,000 employees16%
  6. 5,001–10,000 employees3%
  7. 10,000+ employees5%

Country

  1. United States69%
  2. Canada5%
  3. Germany4%
  4. United Kingdom4%
  5. Italy2%
  6. Australia2%
  7. Austria1%
  8. Switzerland1%

Breakdowns cover the 3,538 customers with company details so far.

Alternatives to Duo

Other tools in the same category, by how many companies use them.

Duo FAQ

How many companies use Duo?

We've found 3,623 companies using Duo among the 179,532 we've scanned so far. We only count a company when a direct public record backs it up.

What kind of companies use Duo?

Duo customers are most often in Healthcare (18%), IT Services (14%) and Financial Services (11%). The most common company size is 51–200 employees (41% of customers with a known size).

Which countries use Duo the most?

Most Duo customers we've found are in United States (69%), Canada (5%) and Germany (4%).

What are the alternatives to Duo?

The most used alternatives in the same category are GlobalSign (24,492 companies), Let's Encrypt (21,017 companies), Proofpoint (19,576 companies) and reCAPTCHA (17,134 companies).

How does runsonwhat know a company uses Duo?

We read public traces only. For Duo that means a domain-verification record in the company's DNS and the company's published subprocessor list. Every match keeps the record it came from.