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There's a free plan; paid tiers are quoted.
Censys has a free plan, but no public price for any paid tier. The pricing page lists Free, Core, Adversary Investigation, Security Operations, Attack Surface Management, Government, and Enterprise; paid plans require contacting sales. There’s no published starting price or monthly-versus-annual rate to budget from. The plan grid does disclose limits, including 20K daily Enrichment API calls on Core and Adversary Investigation, so compare those with your needs before requesting a quote.
01Every plan, line by line
| Plan | Billed annually | Billed monthly | Built for |
|---|---|---|---|
| Free | — | Quote | Basic internet visibility |
| Core | — | Quote | Security analysts triaging alerts |
| Adversary Investigation | — | Quote | Threat hunting and CTI teams |
| Security Operations | — | Quote | Enterprise security operations teams |
| Attack Surface Management | — | Quote | Organizations managing internet-facing assets |
| Government | — | Quote | Government agency investigations |
| Enterprise | — | Quote | Enterprise teams needing custom access |
Add-ons and overages
- Unlimited Enrichment for Core and Adversary Investigation; price not published
- Gold Support; price not published
- Critical Infrastructure Monitoring; price not published
- Government user add-on packs; price not published
02What the plan grid doesn't tell you
Paid plan pricing
Prices aren’t published. Censys says paid plans require contacting sales, so you’ll need a quote to compare costs or budget.
Billing terms
Monthly and annual billing options aren’t published. Ask sales about billing cadence and any commitment before comparing the quote with alternatives.
API call limits
Core and Adversary Investigation list 20K Enrichment API calls per day as a base. Overages and any extra-call pricing aren’t published.
Add-ons and support
Unlimited Enrichment, Gold Support, Critical Infrastructure Monitoring, and Government user packs are listed as add-ons; their prices aren’t published.
03Which plan should you buy?
| If you are… | Get | Why |
|---|---|---|
| Teams needing basic visibility | Free | The free plan covers basic visibility into standard ports and services. Its price and any limits beyond that description aren’t published. |
| Analysts triaging alerts | Core | Lists 5+ users, 20K daily base Enrichment API calls, 1+ month of data history, and view-only threat data. |
| Enterprise security operations teams | Security Operations | Lists unlimited users, API calls, and collections, plus 12+ months of data history and searchable threat data. Price isn’t published. |
04Is Censys worth the money?
Censys is worth pricing out if your security team needs Internet infrastructure visibility for investigations, threat hunting, exposure management, or supplier monitoring. The plan grid gives useful distinctions—especially API allowance, data history, and threat-data access—but not enough to budget: paid prices, billing terms, and add-on costs are unpublished. Ask sales for a quote that spells out those items and matches your expected usage. Without that, the free plan is the only option with a clear entry point.
Censys pricing FAQ
What is Censys.io used for?
Censys provides Internet intelligence for security operations and exposure management. Its platform maps Internet-facing infrastructure and offers visibility for investigations, threat hunting, exposure management, and supplier risk monitoring. The listed capabilities include asset discovery, adversary tracking, and monitoring supplier Internet exposure.
How many employees does Censys have?
The pricing and product information available for this page doesn’t state Censys’s employee count. We can’t verify a current figure from these sources, so treat the count as not published here rather than relying on an estimate.
Who are Censys' competitors?
The published Censys pricing and product information doesn’t name competitors. Which vendors are relevant depends on whether you’re comparing Internet infrastructure data, threat intelligence, exposure management, or supplier monitoring. Compare coverage, data history, API limits, and quoted pricing for your specific use case.
Is Censys a good company?
The available information describes Censys’s security products and plan limits, but doesn’t provide evidence about company culture, customer satisfaction, or financial health. For a buying decision, assess whether its Internet visibility and investigation features fit your needs, then request a quote with billing terms and add-on costs.