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censys.io

Censys

Who runs Censys, what it tracks and what it costs, and the 20 closest threat intelligence alternatives.

Who’s behind it
Not stated
Online since
Unknown
Trackers
Prices
No pricing page
Last price change
–
Closest alternative
Shodan

Measured from Censys’s own pages, the Internet Archive and public records. Hover a dotted value for its source and date.

We’ll send a link to confirm. Your address is only used for these alerts.

Visit Censys

01 · Who’s behind it

Who runs Censys

Censys censys.io

Censys empowers security teams with the most comprehensive, accurate, and up-to-date map of the internet to defend attack surfaces and hunt for threats.

Wikidata: cybersecurity company and search engine

Company
No imprint we could read
Online since
Not in the Internet Archive
Audience
In English

02 · Privacy

What Censys tracks

What the homepage loads before you accept or decline cookies. A cookie banner should hold most of it back until you agree, and a tag manager can load more that we don’t see.

trackers that follow visitors

15 of the 19 alternatives below have fewer, 3 have more.

Privacy-friendly alternatives →
Cookie banner
None found
US company
4 tools

  • Marketing and email tracking

    Links visits to email campaigns and customer profiles.

  • Tag manager

    Loads further tracking scripts, which we can’t always see.

  • Third-party embeds

    Videos, maps or fonts from other companies, which receive the visitor’s IP address.

03 · Alternatives

Alternatives to Censys

Thumbs up if it’s a real alternative to Censys, thumbs down if it isn’t.

Fewer trackers than CensysNo ad trackersRegistered in the EUFree planOnly in English

2 of the 60 sites closest to Censys match.

  1. 01
    Semrush semrush.com Top 10K English Free plan 2 trackers

    Semrush: Your Unfair Advantage for Growing Brand Visibility

    Semrush is the leading platform to grow and measure brand visibility across AI search, SEO, PPC, social, and more.

    Compare Semrush with Censys →
  2. 02
    GitLab gitlab.com Top 1K English Free plan 2 trackers

    GitLab - Speed with control for agentic software engineering

    Teams and agents ship trusted software faster with GitLab, the intelligent orchestration platform with context and governance for the entire software lifecycle.

    Compare GitLab with Censys →

Closest first, by how much each site’s offer resembles Censys’s. Trackers are counted the same way as above. Highlighted technologies are ones Censys uses too. Votes and comments come from visitors and don’t change the order.

04 · History

What changed

Price and policy history →

No changes yet. Each new crawl is compared with the last one, and what Censys adds, drops or rewrites shows up here.

05 · Details

How we measure

Alternatives are matched by what sites actually offer, from their homepages, Wikidata and a summary by Claude, in any language. Trackers and the rest of the stack come from the homepage’s code and DNS records.

The full technology stack and search numbers · 24 technologies
Neighbours
k = 60
Sites searched
9,214
Vector
384-d
Query
316 ms

Built with

CMS
JavaScript libraries
  • jQuery asset https://censys.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1
Fonts
Tag managers
Marketing automation
  • HubSpot page source: js.hsforms.net
  • Marketo page source: munchkin.marketo.net
Live chat & support
  • Zendesk TXT v=spf1 include:_spf.google.com include:mail.zendesk.com include:sendg…
CDN
  • Cloudflare header cf-ray: a5779d40fef462b8-HAM
  • jsDelivr asset https://cdn.jsdelivr.net/npm/swiper@12/swiper-bundle.min.js?ver=12
Hosting
Languages & backends
  • PHP implied by WordPress (page source: /wp-content/)
Email hosting
Email delivery
  • Mailchimp Transactional TXT v=spf1 include:_spf.google.com include:mail.zendesk.com include:sendg…
  • SendGrid TXT v=spf1 include:_spf.google.com include:mail.zendesk.com include:sendg…
DNS hosting
SaaS tools (verified in DNS)
  • Adobe TXT adobe-idp-site-verification=95b30abf0fb761095c8b1060d12da2f11e3576800…
  • Apple Business TXT apple-domain-verification=nM8bqNQWofKOWUwz
  • Atlassian TXT atlassian-domain-verification=4T9gkcNa0K5KMVGlQ3koS4sZ925aIdNUxZ1rUg6…
  • Canva TXT canva-site-verification=9HOXHZIWT2PZgIOg5IMIqw
  • DocuSign TXT docusign=3ca0a77b-71b9-410f-81f0-8ad68d1bdbbc
  • Google Search Console meta google-site-verification: ewTT7I4zDcdTpDAv6WnLfoAhI3CbAai25xh1wZWQOyQ
  • Miro TXT miro-verification=ee7e74fe433d7c4173f56b89c9b2205986703937
  • Zoom TXT ZOOM_verify_Zxf3OIdKTVWYBJtB4z9SeQ