Security health from a distance
See through the external internet surface area of any company from a single unified web interface.
API and Data Services for Top Security Companies
Try the free search to get a taste of our data reserves
SecurityTrails API
APIs for Security Companies, Researchers and Teams
Tap into a treasure-trove of cyber security gold and get the info you can’t find anywhere else. We’re proud to offer security analysts and developers the most current DNS and domain intel with our powerful API.
3.4 Trillion
Historical DNS lookups
3 Billion
Historical WHOIS records
909 Million
Total hostnames tracked
323 Million
Total Domains tracked
"We spent a ton of time and effort building out our own domain lists, but we gave up when we found SecurityTrails – the data was better than anything else we've seen, and allowed us to focus on our core product."
Ben Dowling
IPinfo.io
"SecurityTrails solves the headache of accurately mapping a company's footprint with data you can't find anywhere else. If you are a security analyst or developer, you will get tremendous value from the most current domain intel through their API."
Bill Ladd
RecordedFuture
"SecurityTrails is my source of truth when it comes to threat hunting and research. The speed of the API is crazy and the integrations with automation tools and SIEM tools makes it an easy choice."
Mickey Perre
Splunk
SecurityTrails Feeds
High-quality data feeds for data enrichment
We use a sophisticated process of parsing zone files for Generic Top Level Domains (gTLDs) and recreating country code Top Level Domains (ccTLDs). We make them available from simple CSV download files or APIs that you can integrate into your application.
Whitepaper: Identifying a Company's Online Footprint
Learn how our algorithms work to discover associated domains, IPs, and SSL.
Latest Posts
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![DNS Hijacking: How to Identify and Protect Against It]( "DNS Hijacking: How to Identify and Protect Against It")
DNS Hijacking: How to Identify and Protect Against It
Learn about DNS Hijacking, different types of DNS Hijacking attacks, and ways to identify and protect yourself from this threat.
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![What's My DNS? How to Find Domain DNS Records with our DNS Checker]( "What's My DNS? How to Find Domain DNS Records with our DNS Checker")
What's My DNS? How to Find Domain DNS Records with our DNS Checker
Exploring the best ways to answer the question: What's my DNS?
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![Find Vulnerabilities Before They Become Yours: Cybersecurity with Mergers and Acquisitions]( "Find Vulnerabilities Before They Become Yours: Cybersecurity with Mergers and Acquisitions")
Find Vulnerabilities Before They Become Yours: Cybersecurity with Mergers and Acquisitions
Digital assets like network systems, data, and the way it's stored and protected, are the foundation of any successful business.
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![Top GitHub Dorks and Tools Used to Scan GitHub Repositories for Sensitive Data]( "Top GitHub Dorks and Tools Used to Scan GitHub Repositories for Sensitive Data")
Top GitHub Dorks and Tools Used to Scan GitHub Repositories for Sensitive Data
Exploring ways to scan GitHub for critical data: usernames, passwords, database credentials etc., so you can detect security issues before the bad guys.
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![Cloud security, open S3 buckets and where do we stand now: Interview with Vincent Yiu]( "Cloud security, open S3 buckets and where do we stand now: Interview with Vincent Yiu")
Cloud security, open S3 buckets and where do we stand now: Interview with Vincent Yiu
To learn the consequences of open S3 buckets and how we can protect ourselves in the cloud era, we talked to Vincent Yiu.
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![Where You'll Find Us: An Overview of SecurityTrails Integrations]( "Where You'll Find Us: An Overview of SecurityTrails Integrations")
Where You'll Find Us: An Overview of SecurityTrails Integrations
Recapping all the SecurityTrails integrations and tools currently using our intelligence platform.
