Check21.com's tech stack
What does Check21.com use?
Check21.com (check21.com) uses at least 14 tools we can see from public records, including Microsoft Azure for hosting, Microsoft 365 for email and documents, Calendly for sales and Google Analytics for analytics. Last checked .
- Industry
- Software
- Size
- 11–50 employees
- Based in
- Fort Lauderdale, United States
- Founded
- 2009
- Company page
- Tools found
- 14
- Categories
- 9
- Layers
- 5 of 5
- Last checked
- Oct 2026
Check21.com'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
1 tool, where the bytes are served from
Hosting & Cloud
Application
5 tools, what the product is built with
Data & Observability
2 tools, what they measure and store
Monitoring
Analytics
Go-to-market
4 tools, how they find and keep customers
Marketing
Ads & Pixels
Sales & CRM
Company Ops
2 tools, what the team runs on day to day
Workspace
Security & Compliance
Check21.com tech stack FAQ
What tools does Check21.com use?
As of October 2026, runsonwhat has found 14 tools at Check21.com (check21.com) in public records. Edge & Hosting: Microsoft Azure. Application: Google Fonts, Font Awesome and Vimeo. Data & Observability: Google Analytics and Atlassian Statuspage. Go-to-market: Meta Pixel, Calendly and Pardot. Company Ops: Microsoft 365 and reCAPTCHA. Last checked October 6, 2026.
What cloud does Check21.com run on?
Check21.com uses Microsoft Azure for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Microsoft Azure through DNS records that point at Microsoft Azure. Microsoft Azure is used by 44,506 companies runsonwhat tracks.
What sales tools does Check21.com use?
The sales tools runsonwhat has found at Check21.com are Calendly (October 2026); no CRM shows up in Check21.com's public records. runsonwhat found Calendly through Calendly code on check21.com. Calendly is used by 23,408 companies runsonwhat tracks.
What email provider does Check21.com use?
Check21.com uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 694,638 companies runsonwhat tracks.
What analytics tools does Check21.com use?
Check21.com uses Google Analytics for analytics, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on check21.com. Google Analytics is used by 834,624 companies runsonwhat tracks.
What marketing software does Check21.com use?
Check21.com uses Pardot for marketing, according to runsonwhat (October 2026). runsonwhat found Pardot through a subdomain that points at Pardot and a DNS verification record. Pardot is used by 19,556 companies runsonwhat tracks.
Does Check21.com use Google Fonts?
Yes. runsonwhat found Google Fonts at Check21.com through Google Fonts code on check21.com. Google Fonts is a Media & UI tool used by 777,929 companies runsonwhat tracks.
How does runsonwhat know what Check21.com uses?
runsonwhat reads public records only. Of the 14 tools at Check21.com, 9 were found through code on check21.com, 2 through DNS records, 2 through subdomains that point at the vendor and 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and check21.com 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.