# What does Geost (United States) use?

Geost (United States) (geost.com) shows public evidence of 7 tools, according to runsonwhat (last checked 2026-11-11).

- Industry: Defense & Space
- Size: 51–200 employees
- Based in: Tucson, United States
- Founded: 2004
- LinkedIn: https://www.linkedin.com/company/geost

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | DNS records, Website code |  |
| [Fly.io](https://www.runsonwhat.com/reverse/fly) | Hosting & Cloud | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) | Security & Compliance | Email records |  |
| [Elastic Email](https://www.runsonwhat.com/reverse/elasticemail) | Email Delivery | Email records |  |

## Recent changes at Geost (United States)

- 2026-11-03: stopped using [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare)
- 2026-11-03: started using [Fly.io](https://www.runsonwhat.com/reverse/fly)

## FAQ

### What tools does Geost (United States) use?

As of November 2026, runsonwhat has found 7 tools at Geost (United States) (geost.com) in public records. Edge & Hosting: Fastly and Fly.io. Company Ops: Microsoft 365, Apple Business and Proofpoint. Last checked November 11, 2026.

### What cloud does Geost (United States) run on?

Geost (United States) uses Fly.io for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Fly.io through Fly.io code on geost.com. Fly.io is used by 5,467 companies runsonwhat tracks.

### What email provider does Geost (United States) use?

Geost (United States) uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 736,661 companies runsonwhat tracks.

### Does Geost (United States) use Fastly?

Yes. runsonwhat found Fastly at Geost (United States) through DNS records that point at Fastly and code on geost.com. Fastly is a CDN & Edge tool used by 55,551 companies runsonwhat tracks.

### Has Geost (United States) changed tools recently?

Yes. On runsonwhat's rechecks, Geost (United States) started using Fly.io (latest on November 3, 2026) and stopped using Cloudflare (latest on November 3, 2026). A change counts only between two checks of geost.com done the same way.

### How does runsonwhat know what Geost (United States) uses?

runsonwhat reads public records only. Of the 7 tools at Geost (United States), 3 were found through DNS records, 3 through email records and 1 through code on geost.com. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and geost.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/geost.com (updated November 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.