DNS Chronicle API | WhoisXML API

DNS Chronicle API retrieves any domain’s historical A and AAAA records

Perform a forward search for any FQDN to retrieve all of its historical A and AAAA records or a reverse DNS search for an IP address to obtain a list of all associated FQDNs.

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500 free API credits. No credit card required.

50 Billion+Domains and subdomains
116 Billion+DNS records
60%+Cyber 150 in key categories trust us
52.000+Zufriedene Kunden

Benefits

  • Flexible API queries

    DNS Chronicle API allows you to access past A and AAAA records for an FQDN, or retrieve a list of FQDNs historically associated with an IP address. This ability enables you to perform searches based on the data you currently have.

  • Easy to integrate

    Clear and comprehensive API documentation is available to facilitate your integration and usage of DNS Chronicle API. API results are provided in JSON or XML format, making it compatible with most systems.

  • Extensive high-quality data

    The API retrieves data from a market-leading historical DNS record database with billions of recorded events, allowing you to uncover the deep DNS history of any web property and its connections.

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Practical Usage

  • Threat detection

    Identify unusual changes in domains’ DNS records, such as rapid IP address shifts, which may indicate malicious activity.

  • Attack surface discovery

    Discover outdated or previously unknown domains and subdomains linked to historical company IP addresses.

  • Threat actor monitoring

    Track the historical DNS activity of known malicious domain names to uncover links to threat actors and detect suspicious patterns.

  • Domain investigation

    Analyze the past IP address resolutions of domain names to support investigations into infrastructure and usage patterns.

Explore the insights of DNS Chronicle API with our passive DNS database

Our comprehensive database of historical DNS records contains information on billions of domains and subdomains, enabling users to gather all available DNS data points.

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DNS Chronicle API | WhoisXML API

Get 500 free API credits. No credit card required.

Get started