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SecurityTrails API

by A Recorded Future Company · Since 2017
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ActiveAvailable globallyCloud
Quick facts
VendorA Recorded Future Company
Year launched2017
StatusActive
Location925 N La Brea Ave, 4th floor, Los Angeles, California 90038, US
Countries servedGlobal
Languages1
Integrations10+
Free tierNO
Free trialNO
Contact salesNO

About SecurityTrails API

SecurityTrails API is the search engine for internet infrastructure. It excels by turning the invisible connections of the internet into searchable data, making it an essential tool for threat hunters and bug bounty hunters alike.

SecurityTrails API is the search engine for internet infrastructure. It excels by turning the invisible connections of the internet into searchable data, making it an essential tool for threat hunters and bug bounty hunters alike. For a Security Engineer or SOC Analyst, its value lies in Asset Discovery and Historical Context—it allows you to see not just what a domain looks like today, but everywhere it has been in the past. It is the premier choice for organizations that need to map their digital footprint or investigate cyber adversaries with precision.

Pros & Cons

Pros
  • Because it’s a standard REST API, it can be added to existing security workflows (SOAR) in minutes.
  • The documentation is exceptional, with copy-paste code snippets in multiple programming languages.
  • Exceptional at finding overlooked or lesser-known subdomains that security teams might have missed.
Cons
  • The API focuses on infrastructure (DNS/IP) rather than the content on the pages
  • Strict enforcement of rate limits on lower-tier plans can disrupt automated scripts if not managed carefully.

Features

Key features

Real-Time Data Streams

Frequent scanning ensures that new subdomains and DNS changes are reflected in the API with minimal latency.

WHOIS Intelligence

Programmatic access to current and historical WHOIS ownership records, even for domains that have since become private.

IP Neighborhood Exploration

Identifies other domains hosted on the same IP or IP range, helping to find malicious neighbors or shared infrastructure.

Historical DNS Records

Provides a "time machine" for DNS, allowing users to see past A, AAAA, MX, NS, SOA, and TXT records.

Subdomain Discovery

Instantly finds all subdomains associated with a root domain (e.g., finding dev.example.com from example.com), critical for finding "shadow IT."

Additional features

Tagging System

Categorize domains based on their infrastructure (e.g., "Amazon Web Services").

SSL Certificate Transparency

Access to SSL logs to find newly issued certificates for a domain.

Firehose API

A high-volume stream for enterprise users who need to ingest all new internet changes.

Company Domain Search

Search for all domains owned by a specific legal entity/company.

Reverse DNS (PTR)

Look up the domain name associated with a specific IP address.

Associated Domains

Discover domains that share the same tracking codes (like Google Analytics IDs).

API Usage Tracking

Real-time dashboard to monitor your query consumption and limits.

Bulk Data Access

Ability to download large datasets for offline big-data analysis.

Advanced Filtering

Filter results by record type, date ranges, or specific string matches.

Domain Search

Query by domain name to get immediate technical overviews.

Pricing

Free trial
Free version
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Countries & Languages

Global
Countries served
1
Interface languages
1
Billing currencies

Interface languages

English

Billing currencies

🇺🇸USD

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