# What does ISC use?

ISC (isc.org) shows public evidence of 16 tools, according to runsonwhat (last checked 2026-10-11).

- Industry: Internet
- Size: 11–50 employees
- Based in: Newmarket, United States
- Founded: 1994
- LinkedIn: https://www.linkedin.com/company/internet-systems-consortium

## Edge & Hosting

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

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records |  |
| [Shopify](https://www.runsonwhat.com/reverse/shopify) | Website & CMS | Custom domain, Email records |  |
| [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records |  |
| [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Email records, Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records |  |
| [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records |  |
| [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records, DNS records |  |
| [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records |  |
| [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records |  |
| [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records |  |
| [dmarcian](https://www.runsonwhat.com/reverse/dmarcian) | Security & Compliance | Email records |  |
| [Recruitee](https://www.runsonwhat.com/reverse/recruitee) | People & HR | Custom domain |  |

## FAQ

### What tools does ISC use?

As of October 2026, runsonwhat has found 16 tools at ISC (isc.org) in public records. Edge & Hosting: Cloudflare and Fastly. Application: jQuery. Go-to-market: Mailchimp, Shopify and Zendesk. Company Ops: Microsoft 365, Let's Encrypt and GlobalSign. Last checked October 11, 2026.

### What CRM does ISC use?

ISC uses Salesforce for its CRM, according to runsonwhat (October 2026). runsonwhat found Salesforce through email records that authorize Salesforce and code on isc.org. Salesforce is used by 33,410 companies runsonwhat tracks.

### What email provider does ISC use?

ISC uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 700,621 companies runsonwhat tracks.

### What does ISC use for customer support?

ISC uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk. Zendesk is used by 40,837 companies runsonwhat tracks.

### What is ISC's website built with?

ISC uses Shopify for its website, according to runsonwhat (October 2026). runsonwhat found Shopify through a subdomain that points at Shopify and email records. Shopify is used by 58,722 companies runsonwhat tracks.

### What marketing software does ISC use?

ISC uses Mailchimp for marketing, according to runsonwhat (October 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 113,070 companies runsonwhat tracks.

### Does ISC use jQuery?

Yes. runsonwhat found jQuery at ISC through jQuery code on isc.org. jQuery is a Frontend tool used by 895,859 companies runsonwhat tracks.

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

The companies with the stacks most like ISC's are Shipfix, Hingeto, Amdax and Forcyd, according to runsonwhat (October 2026). Each shares 5 to 10 tools with ISC, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what ISC uses?

runsonwhat reads public records only. Of the 16 tools at ISC, 8 were found through DNS records, 4 through email records, 2 through code on isc.org and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and isc.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/isc.org (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.