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Websites using reCAPTCHA

290,509 websites detected · Updated Nov 13, 2026

What is reCAPTCHA?

reCAPTCHA is a technology in the Authentication Services category. 290,509 websites use reCAPTCHA, detected by Hunter on Nov 13, 2026.

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The websites using reCAPTCHA

A sample of the websites Hunter detects reCAPTCHA on, ordered by web popularity.

Domain name Industry
1
google.com
Software Development 87,881 email addresses
2
weebly.com
Technology, Information and Internet 937 email addresses
3
medium.com
Internet Publishing 129 email addresses
4
website.ws
Technology, Information and Internet 10 email addresses
5
bbb.org
Technology, Information and Media 10 email addresses
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You have 290,509 sites. Now reach the people.

Hunter already holds email addresses at all 50 websites listed above.

  • Anwar J. · Head of Industry Google

    85%

  • David E. · Musical Director Weebly

    99%

  • Greg F. · Mayor Medium

    99%

Real people at the websites listed above. Only the part before the @ is hidden here — the company domain is the real one.

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Who uses reCAPTCHA

Websites running reCAPTCHA, counted by industry and by country. Only the largest groups are shown.

By industry

Industry Websites
Professional Services 34,952
Technology, Information and Media 17,745
Manufacturing 15,318
Consumer Services 12,126
Entertainment Providers 8,984
Hospitals and Health Care 8,978
Administrative and Support Services 6,992
Education 6,533
Accommodation Services 6,486
Financial Services 6,119
Construction 5,651
Retail 5,549

By country

Country Websites
United States 67,674
United Kingdom 17,149
France 13,784
Canada 10,730
Netherlands 9,884
Spain 9,297
Germany 7,546
Australia 6,428
Poland 5,699
Italy 4,352
India 3,500
Brazil 3,330

reCAPTCHA by country

The countries where we detected enough reCAPTCHA websites to rank them.

reCAPTCHA FAQs

Browse every technology

Hunter detects reCAPTCHA on 290,509 websites. The figure comes from Hunter's own crawl of company websites and is rebuilt every night, so it moves as sites adopt and drop the technology.

The table on this page is a sample of the websites running reCAPTCHA, ordered by web popularity, with the industries they are in and how many email addresses Hunter holds for each. Create a free account to search any of them and see the addresses.

The websites Hunter detects reCAPTCHA on most often also run jQuery, PHP and MySQL.

reCAPTCHA is one of the Authentication Services technologies Hunter tracks. Others it detects widely include Gravatar, OpenSSL and Google Sign-in.

Yes — that is what Hunter is for. The last column of the table shows how many email addresses Hunter already holds for a website, where it has found any. Sign up to see the addresses themselves, with the name and job title of the person behind each one.
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