IP to Hosted Domains API

Uncover critical web infrastructure information with the IP to hosted domains API. Finding out what domains are hosted on a specific IP address allows for enhanced cybersecurity investigations, optimized network performance, targeted marketing, and more.

IPinfo’s IP to hosted domains lookup returns the total count of domains being hosted on the IP address and a list of between five and 1,000 domains. These domains are ordered based on host.io domain ranking. With these details, your company can make more informed decisions based on real-time data..

How IP to Hosted Domains API Works

IPinfo’s IP to hosted domains API shows domains that are hosted on one IP address and belong to one business entity or individual. Our API determines hosted domains by visiting all the websites in the world, then identifying which IP address each website/domain resolves to.

Explore the networks with the most hosted domains here.

IPinfo produces IP geolocation data using a proprietary probe network. Standard IP address information shares geolocation details such as country, region, city, or zip codes. See how our IP Geolocation API works.

While valuable, these searches don't reveal the specific hostnames within a network, which is useful for site security and lead generation. IPinfo’s API provides domain data, updated periodically, that includes name, domain, and type.

Reverse DNS vs. Reverse IP

Reverse IP or reverse DNS lookups determine the hostname associated with an IP address. A user enters a domain name from a browser, which triggers a DNS server to find the IP address that corresponds to that domain name.

Conversely, our IP to hosted domains API reveals domains associated with an IP. A user enters an IP address, which identifies where the domain resolves. The IPinfo IP to hosted domains API can reveal hundreds or even thousands of domains hosted on one IP address. Easily explore the domain ecosystem of any IP to better understand its hosting environment.

Use Cases for IP to Hosted Domains API

Cybersecurity threat reporting

Improve your network security by understanding the full scope of your digital footprint.

Lead Generation

Provide customized experiences for leads based on the hosted domain affiliated with their IP address.

Competitive Analysis

Gain valuable marketing insights by analyzing hosting patterns of competitors and industry leaders.

Threat/Fraud Detection and Prevention

Enhance your threat intelligence capabilities by identifying and blocking potentially malicious domains that all share the same hosting server.

Getting Started with the IP to Hosted Domains API

Getting started with IPinfo's IP to hosted domains API is simple. Our developer-friendly approach ensures a smooth integration process, allowing you to harness the power of hosted domains data for IP addresses in no time.

Sign up for a free API key and explore our comprehensive documentation here. This gives access to not just IP ranges data, but our IP geolocation API, as well. Once your free account is set up, test the API with our user-friendly console.

Made for Developers, Trusted by Enterprises

Our database is built, maintained, and supported by our in-house team of developers and engineers. These data experts are ready to troubleshoot problems, build unique use cases, and create additional enterprise solutions.

Supports Integrations

Our API integrations merge the power of IPinfo’s proprietary IP address database with other industry-leading platforms. Use your IP range data at scale with our supported integrations, such as Snowflake, Splunk, Maltego, and beyond.

Official libraries

We offer libraries for the most commonly used programming languages and frameworks. Check out our documentation to facilitate easier setup.

IPinfo.io helped us tremendously to gain market insights about the hosting and datacenter industry.

Jan Löffler

CTO, Plesk

Identifying the true owners and operators of compromised infrastructure has always been a challenge, but IPinfo simplifies the process. Their normalization of the data allows Spur to automate many aspects of an investigation that used to require an analyst. IPInfo provides the foundation for a successful investigation and is a must-have in any security organization.

Thomas Kilmer

Co-founder, Spur Intelligence Group

Since using IPinfo's data products, we identify and remove traffic of 204% more unwanted IP sources than with previous open-source solutions.

Daniel Fischer

CEO, Froyoo

IPinfo.io helped us tremendously to gain market insights about the hosting and datacenter industry.

Jan Löffler

CTO, Plesk

Thomas Kilmer

Co-founder, Spur Intelligence Group

Frequently Asked Questions

What is IP to hosted domains?

IP to hosted domains reveal all the domains that are hosted on one IP address.

How many distinct domains can be hosted at a single IP address?

A single IP can host limitless domains.

Why is IP to hosted domain information important?

IP to hosted domain information helps cybersecurity develop threat intelligence by discovering associated domains that are tied to one IP address owner. Marketing teams and other organizations use the IP to hosted domain API to protect their domain reputation and site ranking.

What’s the difference between reverse DNS lookups and IP to hosted domain lookups?

Reverse DNS lookups determine the hostname associated with an IP address. IP to hosted domain lookups reveal domains associated with an IP, which offers a greater level of detail.

Is there a limit on API requests?

The IP to hosted domains API is part of our business tier package, which has a limit of 500,000 API requests per month.

Who can benefit from using this API?

Cybersecurity professionals, SEO specialists, network administrators, digital forensics teams, and threat intelligence experts can all benefit from using IPinfo’s IP to hosted domain API.

What are common use cases for using this data?

IP to hosted domain data can help identify spam domains and suspicious IPs, understand network issues, identify potential fraud, and deliver targeted content.

Industry-leading companies around the world trust our APIs

We offer 50,000 free IP geolocation lookups per month. Sign up for free to test our data.