4OO's tech stack
What does 4OO use?
4OO (4oo.nl) uses at least 14 tools we can see from public records, including Microsoft 365 for email and documents, Google Analytics for analytics, WordPress for its website and reCAPTCHA for security. Last checked .
- Industry
- Healthcare
- Size
- 11–50 employees
- Based in
- Amsterdam, Netherlands
- Company page
- Tools found
- 14
- Categories
- 8
- Layers
- 4 of 5
- Last checked
- Nov 2026
4OO's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Application
6 tools, what the product is built with
Data & Observability
2 tools, what they measure and store
Go-to-market
4 tools, how they find and keep customers
Website & CMS
Marketing
Ads & Pixels
Company Ops
2 tools, what the team runs on day to day
Workspace
Security & Compliance
4OO tech stack FAQ
What tools does 4OO use?
As of November 2026, runsonwhat has found 14 tools at 4OO (4oo.nl) in public records. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365 and reCAPTCHA. Last checked November 5, 2026.
What email provider does 4OO use?
4OO uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 723,811 companies runsonwhat tracks.
What analytics tools does 4OO use?
4OO uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on 4oo.nl. Google Analytics is used by 906,276 companies runsonwhat tracks.
What is 4OO's website built with?
4OO uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on 4oo.nl. WordPress is used by 607,382 companies runsonwhat tracks.
Does 4OO use jQuery?
Yes. runsonwhat found jQuery at 4OO through jQuery code on 4oo.nl. jQuery is a Frontend tool used by 930,199 companies runsonwhat tracks.
How does runsonwhat know what 4OO uses?
runsonwhat reads public records only. Of the 14 tools at 4OO, 12 were found through code on 4oo.nl, 2 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and 4oo.nl about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.