What does Censys use?

As of October 2026, runsonwhat has found 68 tools at Censys (censys.com) in public records. Edge & Hosting: Cloudflare, Google Cloud and WP Engine. Application: jQuery, Google Fonts and Vimeo. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 22, 2026.

Censys uses Google Cloud for hosting and cloud infrastructure, alongside WP Engine, according to runsonwhat (October 2026). runsonwhat found Google Cloud through DNS records that point at Google Cloud. Google Cloud is used by 76,331 companies runsonwhat tracks.

Censys uses HubSpot for its CRM, alongside ZoomInfo, 6sense and Qualified, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records, and Censys has used it since at least July 2025. HubSpot is used by 95,152 companies runsonwhat tracks.

Censys uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 716,363 companies runsonwhat tracks.

Censys uses Zendesk for customer support and documentation, alongside Drift and ReadMe, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records, and Censys has used it since at least August 2023. Zendesk is used by 42,364 companies runsonwhat tracks.

Censys uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on censys.com. Stripe is used by 29,741 companies runsonwhat tracks.

Censys has used Marketo since at least July 2023, going by the first public certificate of the censys.com subdomain that points at Marketo. Other long-running tools at Censys include Atlassian Statuspage (since July 2023), Zendesk (since August 2023) and Gainsight (since June 2024).

Yes. runsonwhat found jQuery at Censys through jQuery code on censys.com. jQuery is a Frontend tool used by 922,984 companies runsonwhat tracks.

Yes. runsonwhat has found Anthropic and OpenAI at Censys; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Censys may use more AI tools than these.

The companies with the stacks most like Censys' are Nintex Global, Brandwatch, Gong.io and Sprout Social, according to runsonwhat (October 2026). Each shares 31 to 41 tools with Censys, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

runsonwhat reads public records only. Of the 68 tools at Censys, 29 were found through DNS records, 24 through code on censys.com, 9 through subdomains that point at the vendor, 5 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and censys.com about monthly.