# What does Check21.com use?

Check21.com (check21.com) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-10-17).

- Industry: Software
- Size: 11–50 employees
- Based in: Fort Lauderdale, United States
- Founded: 2009
- LinkedIn: https://www.linkedin.com/company/479851

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | DNS records |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Font Awesome](https://www.runsonwhat.com/reverse/fontawesome) | Media & UI | Website code |  |
| [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code |  |
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [Google Maps](https://www.runsonwhat.com/reverse/google-maps) | Media & UI | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [Calendly](https://www.runsonwhat.com/reverse/calendly) | Sales & CRM | Website code |  |
| [Pardot](https://www.runsonwhat.com/reverse/pardot) | Marketing | Custom domain, DNS verification records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code |  |

## 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 17, 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 46,670 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 27,523 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 710,126 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 878,368 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 20,285 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 808,611 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.


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Source: runsonwhat, https://www.runsonwhat.com/company/check21.com (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.