# What does Censys use? Censys (censys.com) shows public evidence of 69 tools, according to runsonwhat (last checked 2026-11-06). - Industry: Computer & Network Security - Size: 51–200 employees - Based in: Ann Arbor, United States - Founded: 2017 - LinkedIn: https://www.linkedin.com/company/censysio ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | DNS records | | | [WP Engine](https://www.runsonwhat.com/reverse/wpengine) | Hosting & Cloud | Custom domain, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification records, Website code | | | [Rive](https://www.runsonwhat.com/reverse/rive) | Media & UI | Website code | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code | | | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | | [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain | 2023-07 | | [Segment](https://www.runsonwhat.com/reverse/segment) | Analytics | DNS verification records, Website code | | | [LaunchDarkly](https://www.runsonwhat.com/reverse/launchdarkly) | Flags & Experiments | DNS verification records | | | [Pendo](https://www.runsonwhat.com/reverse/pendo) | Analytics | DNS verification records | | | [Dreamdata](https://www.runsonwhat.com/reverse/dreamdata) | Analytics | Website code | | | [Marketo Measure](https://www.runsonwhat.com/reverse/marketo-measure) | Analytics | Website code | | | [ConfigCat](https://www.runsonwhat.com/reverse/configcat) | Flags & Experiments | DNS verification records | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Email records, Website code | 2025-07 | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records | 2023-08 | | [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain | 2025-07 | | [X Ads](https://www.runsonwhat.com/reverse/x-ads) | Ads & Pixels | Website code | | | [Ahrefs](https://www.runsonwhat.com/reverse/ahrefs) | Marketing | DNS verification records | | | [ZoomInfo](https://www.runsonwhat.com/reverse/zoominfo) | Sales & CRM | Website code | | | [Reddit Ads](https://www.runsonwhat.com/reverse/reddit-ads) | Ads & Pixels | Website code | | | [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Custom domain, Website code | 2023-07 | | [6sense](https://www.runsonwhat.com/reverse/sixsense) | Sales & CRM | Website code | | | [G2](https://www.runsonwhat.com/reverse/g2) | Marketing | Website code | | | [Drift](https://www.runsonwhat.com/reverse/drift) | Support & Docs | DNS verification records | | | [Qualified](https://www.runsonwhat.com/reverse/qualified) | Sales & CRM | Website code | | | [ReadMe](https://www.runsonwhat.com/reverse/readme) | Support & Docs | Custom domain | 2025-01 | | [Storylane](https://www.runsonwhat.com/reverse/storylane) | Marketing | Website code | | | [Gainsight](https://www.runsonwhat.com/reverse/gainsight) | Sales & CRM | Custom domain | 2024-06 | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records, Website code | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Cookiebot](https://www.runsonwhat.com/reverse/cookiebot) | Security & Compliance | Website code | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records, Email records | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email 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 | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records | | | [Miro](https://www.runsonwhat.com/reverse/miro) | Collaboration | DNS verification records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records | | | [Canva](https://www.runsonwhat.com/reverse/canva) | Collaboration | DNS verification records | | | [Bitwarden](https://www.runsonwhat.com/reverse/bitwarden) | Security & Compliance | DNS verification records | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [Box](https://www.runsonwhat.com/reverse/box) | Collaboration | DNS verification records | | | [DMARC Digests](https://www.runsonwhat.com/reverse/dmarcdigests) | Security & Compliance | Email records | | | [Rippling](https://www.runsonwhat.com/reverse/rippling) | People & HR | DNS verification records | | | [Vanta](https://www.runsonwhat.com/reverse/vanta) | Security & Compliance | Custom domain | 2026-02 | | [Greenhouse](https://www.runsonwhat.com/reverse/greenhouse) | People & HR | Website code | | | [Lovable](https://www.runsonwhat.com/reverse/lovable) | Dev Tools | DNS verification records | | ## Recent changes at Censys - 2026-11-06: started using [Greenhouse](https://www.runsonwhat.com/reverse/greenhouse) ## Hiring at Censys 31 open roles on its public job board: Sales 13, Engineering 9, Data & AI 3, Marketing 2, Other 2, Customer Success 1. ## FAQ ### What tools does Censys use? As of November 2026, runsonwhat has found 69 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 November 6, 2026. ### What cloud does Censys run on? Censys uses Google Cloud for hosting and cloud infrastructure, alongside WP Engine, according to runsonwhat (November 2026). runsonwhat found Google Cloud through DNS records that point at Google Cloud. Google Cloud is used by 77,778 companies runsonwhat tracks. ### What CRM does Censys use? Censys uses HubSpot for its CRM, alongside ZoomInfo, 6sense and Qualified, according to runsonwhat (November 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 97,596 companies runsonwhat tracks. ### What email provider does Censys use? Censys uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 733,991 companies runsonwhat tracks. ### What does Censys use for customer support? Censys uses Zendesk for customer support and documentation, alongside Drift and ReadMe, according to runsonwhat (November 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 43,643 companies runsonwhat tracks. ### What payment provider does Censys use? Censys uses Stripe for payments and billing, according to runsonwhat (November 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on censys.com. Stripe is used by 31,405 companies runsonwhat tracks. ### How long has Censys used Marketo? 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). ### Does Censys use jQuery? Yes. runsonwhat found jQuery at Censys through jQuery code on censys.com. jQuery is a Frontend tool used by 927,220 companies runsonwhat tracks. ### Does Censys use AI tools? 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. ### Is Censys hiring? Yes. As of November 2026, Censys has 31 open roles on its public Greenhouse job board, most in sales (13), engineering (9) and data & AI (3). 8 were posted in the last 30 days. ### Has Censys changed tools recently? Yes. On runsonwhat's rechecks, Censys started using Greenhouse (latest on November 6, 2026). A change counts only between two checks of censys.com done the same way. ### Which companies have a tech stack similar to Censys's? The companies with the stacks most like Censys' are Nintex Global, Brandwatch, Gong.io and Nutanix, according to runsonwhat (November 2026). Each shares 17 to 32 tools with Censys, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Censys uses? runsonwhat reads public records only. Of the 69 tools at Censys, 29 were found through DNS records, 25 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. --- Source: runsonwhat, https://www.runsonwhat.com/company/censys.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.