Rackspace's tech stack
What does Rackspace use?
Rackspace (rackspacecloud.com) uses at least 7 tools we can see from public records, including GitHub Pages for hosting, Microsoft 365 for email and documents, Cloudflare for content delivery and Mailgun for email delivery. Last checked .
- Company page
- Tools found
- 7
- Categories
- 6
- Layers
- 3 of 5
- Last checked
- Oct 2026
Rackspace'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
Hosting & Cloud
CDN & Edge
Application
1 tool, what the product is built with
Frontend
Company Ops
4 tools, what the team runs on day to day
Email Delivery
Workspace
Security & Compliance
Rackspace tech stack FAQ
What tools does Rackspace use?
As of November 2026, runsonwhat has found 7 tools at Rackspace (rackspacecloud.com) in public records. Edge & Hosting: Cloudflare and GitHub Pages. Application: Next.js. Company Ops: Microsoft 365, reCAPTCHA and Proofpoint. Last checked October 28, 2026.
What cloud does Rackspace run on?
Rackspace uses GitHub Pages for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found GitHub Pages through a subdomain that points at GitHub Pages. GitHub Pages is used by 4,292 companies runsonwhat tracks.
What email provider does Rackspace use?
Rackspace uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 718,450 companies runsonwhat tracks.
Does Rackspace use Cloudflare?
Yes. runsonwhat found Cloudflare at Rackspace through a subdomain that points at Cloudflare. Cloudflare is a CDN & Edge tool used by 723,291 companies runsonwhat tracks.
How does runsonwhat know what Rackspace uses?
runsonwhat reads public records only. Of the 7 tools at Rackspace, 2 were found through subdomains that point at the vendor, 2 through code on rackspacecloud.com, 2 through email records and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and rackspacecloud.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.