Reverse IP Solutions to Find IP-Connected Domains | WhoisXML API

Reverse IP solutions to uncover IP-connected domains

Broaden your DNS asset discovery with any of our Reverse IP consumption models—Lookup, API, and Database.

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500 free API requests. No credit card required.

50 Billion+Domains and subdomains
116 Billion+"A" records
99.5%of IP addresses in use
52,000+Satisfied customers

Our reverse IP product line includes:

  • DNS Database Download

    DNS Database Download

    Teams requiring bulk data access can obtain IP-connected domains and other passive DNS records from our market-leading DNS Database Download.

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  • API

    API

    Integrate Reverse IP API into existing tools and workflows to obtain a list of domains connected to any IP address through API calls.

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  • Lookup

    Lookup

    Type in an IP address of interest into our intuitive GUI to obtain a list of resolving domains and their first-seen and last-updated dates.

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Benefits

  • Up-to-date

    Our Reverse IP services rely on an extensive passive DNS database with millions of new DNS records added daily.

  • Easy to integrate

    Our DNS Database Download is available as CSV files, while Reverse IP API supports major programming languages and is easy for developers to integrate.

  • Scalable

    Select the right Reverse IP solutions for your business and system requirements—lookup, API, or database.

Product Usage

IoC list expansion

Identify web properties related to an IP address tagged as an IoC in a specific malicious campaign to uncover more threat artifacts.

Threat analysis

Reverse IP data can help investigate security threats by identifying the source of malicious traffic and mapping its connections.

DNS asset discovery

Expand DNS asset discovery with access to exhaustive lists of domains connected to specific IP addresses.

Domain and brand reputation protection

Track domain connections to IP addresses and identify potential reputation- or performance-damaging properties sharing the same infrastructure.

Reverse IP/DNS Overview | WhoisXML API

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