# What does Expand Energy use?

Expand Energy (chk.com) shows public evidence of 9 tools, according to runsonwhat (last checked 2026-10-09).

- Industry: Oil & Gas
- Based in: United States
- Founded: 1989

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |
| [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records, DNS records |  |
| [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) | Security & Compliance | Email records |  |
| [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records |  |
| [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records |  |
| [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records |  |
| [Imperva](https://www.runsonwhat.com/reverse/imperva) | Security & Compliance | Custom domain |  |
| [Flexera](https://www.runsonwhat.com/reverse/flexera) | Dev Tools | DNS verification records |  |

## FAQ

### What tools does Expand Energy use?

As of October 2026, runsonwhat has found 9 tools at Expand Energy (chk.com) in public records. Company Ops: Microsoft 365, SendGrid and GlobalSign. Last checked October 9, 2026.

### What email provider does Expand Energy use?

Expand Energy uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 701,702 companies runsonwhat tracks.

### Does Expand Energy use SendGrid?

Yes. runsonwhat found SendGrid at Expand Energy through email records that authorize SendGrid. SendGrid is a Email Delivery tool used by 191,059 companies runsonwhat tracks.

### Which companies have a tech stack similar to Expand Energy's?

The companies with the stacks most like Expand Energy's are IONOS, Volkswagen de México, Elo and FIS Global, according to runsonwhat (October 2026). Each shares 3 to 6 tools with Expand Energy, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Expand Energy uses?

runsonwhat reads public records only. Of the 9 tools at Expand Energy, 5 were found through DNS records, 3 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 chk.com about monthly.


---

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