# What does Clear21 use?

Clear21 (clear21.com) shows public evidence of 18 tools, according to runsonwhat (last checked 2026-10-26).

- Industry: Software
- Size: 51–200 employees
- Based in: Mulgrave, Australia
- Founded: 1990
- LinkedIn: https://www.linkedin.com/company/clear21

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Website code |  |
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |
| [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records, Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records, Website code |  |
| [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records |  |
| [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | DNS verification records |  |
| [Exclaimer](https://www.runsonwhat.com/reverse/exclaimer) | Workspace | Email records |  |
| [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records |  |
| [DMARC Digests](https://www.runsonwhat.com/reverse/dmarcdigests) | Security & Compliance | Email records |  |

## Recent changes at Clear21

- 2026-10-19: started using [DMARC Digests](https://www.runsonwhat.com/reverse/dmarcdigests)

## FAQ

### What tools does Clear21 use?

As of October 2026, runsonwhat has found 18 tools at Clear21 (clear21.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Amazon CloudFront. Application: Google Fonts, React and Next.js. Data & Observability: Google Analytics and Microsoft Clarity. Go-to-market: Zendesk. Company Ops: Microsoft 365, reCAPTCHA and Apple Business. Last checked October 26, 2026.

### What cloud does Clear21 run on?

Clear21 uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on clear21.com. Amazon Web Services is used by 145,823 companies runsonwhat tracks.

### What email provider does Clear21 use?

Clear21 uses Microsoft 365 for email and office software, alongside Apple Business and Exclaimer, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 712,580 companies runsonwhat tracks.

### What does Clear21 use for customer support?

Clear21 uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 42,048 companies runsonwhat tracks.

### What analytics tools does Clear21 use?

Clear21 uses Google Analytics for analytics, alongside Microsoft Clarity, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on clear21.com. Google Analytics is used by 885,096 companies runsonwhat tracks.

### Does Clear21 use Google Fonts?

Yes. runsonwhat found Google Fonts at Clear21 through Google Fonts code on clear21.com. Google Fonts is a Media & UI tool used by 812,844 companies runsonwhat tracks.

### Has Clear21 changed tools recently?

Yes. On runsonwhat's rechecks, Clear21 started using DMARC Digests (latest on October 19, 2026). A change counts only between two checks of clear21.com done the same way.

### How does runsonwhat know what Clear21 uses?

runsonwhat reads public records only. Of the 18 tools at Clear21, 8 were found through code on clear21.com, 7 through DNS records, 2 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and clear21.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/clear21.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.