runsonwhat

CHECK24's tech stack

What does CHECK24 use?

CHECK24 (check24.de) uses at least 28 tools we can see from public records, including Microsoft 365 for email and documents, Zendesk for customer support, Google Analytics for analytics and Sentry for monitoring. Last checked .

Industry
Financial Services
Size
1,001–5,000 employees
Based in
München, Germany
Founded
1999
LinkedIn
Company page
Re-check liveVisit check24.de
Tools found
28
Categories
15
Oldest proven tool
Sep 2025
Last checked
Oct 2026

CHECK24'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.

Edge & Hosting

2 tools, where the bytes are served from

CDN & Edge

Application

6 tools, what the product is built with

Frontend

Backend & Database

AI

Data & Observability

4 tools, what they measure and store

Monitoring

Analytics

Go-to-market

4 tools, how they find and keep customers

Marketing

Ads & Pixels

Support & Docs

Company Ops

12 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

Finance & Legal

Security & Compliance

What changed at CHECK24

Using since

Dates come from the first certificate of the subdomain that points at the tool.

  1. Cloudflare

Companies like CHECK24 also use

Tools common among companies with a similar stack that we haven't found at CHECK24.

Companies with a stack like CHECK24's

Ranked by shared tools, with rare tools counting more.

More Financial Services companies

Other Financial Services companies we've checked.

CHECK24 tech stack FAQ

What tools does CHECK24 use?

As of October 2026, runsonwhat has found 28 tools at CHECK24 (check24.de) in public records. Edge & Hosting: Cloudflare and Amazon CloudFront. Application: React, Tailwind CSS and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: Google Ads, Microsoft Ads and Zendesk. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 7, 2026.

What email provider does CHECK24 use?

CHECK24 uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 697,010 companies runsonwhat tracks.

What does CHECK24 use for customer support?

CHECK24 uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk. Zendesk is used by 40,538 companies runsonwhat tracks.

What analytics tools does CHECK24 use?

CHECK24 uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on check24.de. Google Analytics is used by 845,053 companies runsonwhat tracks.

What monitoring tools does CHECK24 use?

CHECK24 uses Sentry for monitoring, alongside PagerDuty, according to runsonwhat (October 2026). runsonwhat found Sentry through Sentry code on check24.de. Sentry is used by 76,591 companies runsonwhat tracks.

How long has CHECK24 used Cloudflare?

CHECK24 has used Cloudflare since at least September 2025, going by the first public certificate of the check24.de subdomain that points at Cloudflare.

Does CHECK24 use Cloudflare?

Yes. runsonwhat found Cloudflare at CHECK24 through a subdomain that points at Cloudflare, in use since at least September 2025. Cloudflare is a CDN & Edge tool used by 688,945 companies runsonwhat tracks.

Does CHECK24 use AI tools?

Yes. runsonwhat has found Anthropic and OpenAI at CHECK24; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so CHECK24 may use more AI tools than these.

Which companies have a tech stack similar to CHECK24's?

The companies with the stacks most like CHECK24's are Reflex, Convera, DOKU and Salary Finance, according to runsonwhat (October 2026). Each shares 6 to 13 tools with CHECK24, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what CHECK24 uses?

runsonwhat reads public records only. Of the 28 tools at CHECK24, 11 were found through DNS records, 8 through code on check24.de, 6 through email records and 3 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and check24.de 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.