about.
about.censys.io presents the official information page for the Censys internet-wide scanning and device-discovery platform.
At a glance
Antivirus · registration · identity- Operator identity: Missing. No independently verifiable operator identity
- No engine classified the URL as malicious or suspicious in this scan; 58 returned harmless, 34 returned undetected, and 0 returned no usable result.
- Google Safe Browsing returned no listed threat categories for this address at scan time.
- The site presented a valid TLSv1.3 certificate at scan time.
- A page capture was analyzed and did not record a visual clone indicator.
Intelligence
The site is the about page for Censys, a legitimate security-research platform founded by University of Michigan computer scientists. It explains how the service performs daily harmless connection attempts to every IPv4 address, curates the resulting data, and makes it available through an interactive search engine and API for enterprises, CERTs, and researchers. The page lists the scan subnets, provides technical documentation links, and contains no login forms, countdown timers, or deceptive copy.
Evidence Map
Multiple reputation sources returned usable results
No independently verifiable operator identity
Only partial behavior evidence was available
No reliable registration history was saved
- 1Hosting IP carries an abuse-confidence score of 40/100 from 53 reports
- 2No contact email, phone, or postal address listed on the page
- 1Page provides clear, descriptive explanation of Censys service and data collection practices
- 2Professional, informative content with no indicators of deceptive or malicious intent
- 3Screenshot assessed as legitimate landing page for Censys security platform
- 4Zero antivirus engines flagged the URL; Google Safe Browsing shows no threat categories
Site purpose and visitor journey
The page at https://about.censys.io/ is titled "Censys" and serves as the informational landing page for the Censys platform. Visitors encounter a clear description of what Censys does: it probes every public IP address and popular domain names daily, completes protocol handshakes on responsive services, and publishes the collected data through a search engine and API.
Content and claims observed
The text states that Censys was founded by computer scientists at the University of Michigan and that its data has been used in hundreds of scientific papers. It details the scanning approach, explicitly notes that only publicly visible information is collected, and provides links to data definitions and the list of scan subnets that operators can allowlist or blocklist.
Technical observations
The site presented a valid TLSv1.3 certificate. No contact email, phone number, or postal address appears on the page. The redirect path contained zero hops, and the page did not load any login form, countdown timer, or deceptive notification bait.
Visual and security signals
Visual analysis recorded a risk score of 0/100 with no clone indicators. The screenshot shows a professional, informative layout consistent with a legitimate security-research platform. No antivirus engine classified the URL as malicious or suspicious, and Google Safe Browsing returned no threat categories.
Website Preview
The screenshot displays a legitimate, informative landing page for the Censys security platform.
- 1The page provides a clear, descriptive explanation of the Censys service and its data collection practices.
- 2The content is professional, informative, and contains no indicators of deceptive or malicious intent.
Web Research
Censys is described as a platform that helps information security practitioners discover, monitor, and analyze devices accessible from the Internet.
Threat Detection
Antivirus results, browser warnings, isolated page observations, and the threat pattern identified in this report.
Antivirus engine results
Evidence behind this threat profile
- 1Hosting IP carries an abuse-confidence score of 40/100 from 53 reports
- 2No contact email, phone, or postal address listed on the page
No supported scam pattern identified
This profile separates the site's primary threat from other patterns supported by the saved page evidence, public research, and security findings.
Review the antivirus, identity, domain, and research findings before sharing money, credentials, personal data, or wallet access.
Technical Details
Identity, domain, infrastructure, and connection facts saved with this scan.
July 20, 2026 at 12:32 PM UTCIdentity
6 facts- Operator
- Missing
- On-domain email
- Not observed
- Other email
- Not observed
- Phone
- Not observed
- Postal address
- Not observed
- Social profiles
- Not observed
Domain
8 facts- Domain age
- Unavailable
- Registered
- Unavailable
- Registrar
- Unavailable
- Expires
- Unavailable
- WHOIS updated
- Unavailable
- Registrant
- Unavailable
- Registration country
- Unavailable
- WHOIS privacy
- Unavailable
Infrastructure
14 facts- HTTPS
- Valid certificate
- TLS protocol
- TLSv1.3
- Certificate issuer
- Let's Encrypt · YR1
- Certificate subject
- about.censys.io
- Certificate valid from
- Jul 10, 2026
- Certificate valid to
- Oct 8, 2026
- Network address
- 185.199.108.153
- ASN
- Unavailable
- Hosting organization
- GitHub, Inc.
- Country
- US
- Server
- GitHub.com
- Site platform
- Unavailable
- IP reputation
- 40% confidence · 53 reports
- Tor exit node
- No
Connections
13 facts- Scan scope
- Domain
- Destination host
- about.censys.io
- Redirects
- 0
- Cross-domain redirect
- No
- Redirect status codes
- 200
- Lookalike characters
- Not observed
- Internationalized domain
- No
- Page response
- 200
- Observation coverage
- Unavailable
- Extracted links
- Unavailable
- Unique IPs contacted
- Unavailable
- Countries contacted
- Unavailable
- Referenced domains
- 5
What to do
Use normal caution. The page is the official about page for the Censys security-research platform; visitors can review the listed scan subnets and technical documentation if they wish to understand or control exposure to its scans.
No incident response is indicated by this scan. Continue using normal caution, and act only if you notice an unexpected download, login prompt, payment request, or account activity.
Final Verdict
Why this verdict
The verdict is safe: the page explicitly describes Censys as a platform for discovering and analyzing publicly reachable devices, explains its scanning methodology without deceptive claims, and no antivirus engine or Google Safe Browsing flagged the address.
Use normal caution. The page is the official about page for the Censys security-research platform; visitors can review the listed scan subnets and technical documentation if they wish to understand or control exposure to its scans.
Key evidence
- 1Page provides clear, descriptive explanation of Censys service and data collection practices
- 2Professional, informative content with no indicators of deceptive or malicious intent
- 3Screenshot assessed as legitimate landing page for Censys security platform
Safety FAQ
Is about.censys.io safe to use?+
The verdict is safe: the page explicitly describes Censys as a platform for discovering and analyzing publicly reachable devices, explains its scanning methodology without deceptive claims, and no antivirus engine or Google Safe Browsing flagged the address.
What should I do about about.censys.io?+
Use normal caution. The page is the official about page for the Censys security-research platform; visitors can review the listed scan subnets and technical documentation if they wish to understand or control exposure to its scans.
How old is about.censys.io?+
A reliable public registration date was not available for about.censys.io.
What if I already interacted with about.censys.io?+
No incident response is indicated by this scan. Continue using normal caution, and act only if you notice an unexpected download, login prompt, payment request, or account activity.
When was this report updated?+
This report reflects the scan completed July 20, 2026 at 12:32 PM UTC.
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