We scan the entire internet every week, so detections stay current.
4B+
Observations captured every day, across DNS records, public service scans and websites.
75,317
Technologies tracked, each matched to the companies running them and who to call.
Companies using Proto.io
Showing 5 of 459 companies
We are changing our name… We are now Idaho Gemstones.
ebay.com · Import and export services · 251–500 employees
Last seen 24 Jul 2026
The most recent date Firmable detected Proto.io at this company.
Decision makers · 225 on fileSenior people on file at this company. Firmable holds their names, emails and mobiles.
Head of Privacy, AI and Data Responsibility (APAC)MobileEmail
Director of Sales eBayMobileEmail
Unlock names, emails and mobiles in the trial.
Signals Recent events at this company, such as a leadership change, funding or a new office.
Promoted to VP & General Manager Europe · 20 Sep 2026
eBay Inc. invested into assets: Authentication Center in Louisville, Kentucky, United States, Northern America, Americas on Aug 12th '26. · 12 Aug 2026
A breakdown of the 459 companies running Proto.io.
Top industries
Information technology and services178
Professional and business services82
Financial services45
Art, sports and recreation28
Industrial and manufacturing23
Education and training22
Media and telecommunications19
Hospitality and travel11
No industry recorded: 21
Company size
1–1039 (10%)
11–5065 (16%)
51–25090 (22%)
251–50054 (13%)
501–1,00024 (6%)
1,001–5,00053 (13%)
5,001–10,00017 (4%)
10,001+68 (17%)
Share of companies with a recorded size, by employees.
No size recorded: 49
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Frequently asked questions
About the Proto.io data on this page.
How many companies use Proto.io?
Firmable holds confirmed Proto.io detections for 459 distinct companies, 35 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Proto.io?
We are changing our name… We are now Idaho Gemstones., Numentica and Hubstaff are among the most prominent in the current set.
What industries use Proto.io?
Information technology and services, professional and business services and financial services lead the set, across 18 industries in total.
What size companies use Proto.io?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Proto.io users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
35 companies were confirmed in the last 90 days. Last detection 19 September 2026.
