Reverse IP lookup API

Q: What is a reverse IP lookup?

A lookup that lists the domains hosted on one IP address. It's also called an IP to domain or hosted domains lookup.

Q: How many domains can share one IP address?

There is no fixed limit. A shared hosting server can serve thousands of domains from a single IP.

Q: What is the difference between reverse DNS and reverse IP lookups?

A reverse IP lookup finds all domains hosted on an IP. A reverse DNS lookup returns the one hostname set in the IP's PTR record.

Find the domains hosted on an IPv4 address. Enrich leads, map shared hosting and trace the infrastructure behind abuse.

The hosted domains API is part of the Medium plan and above.


ip: "8.8.8.8",
total_count: 2,
data:    "dns.google",

    "google-public-dns-a.google.com",


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Hosted Domains API

Turn an IP address into the domains and companies behind it, for sales, marketing and security teams.

Lead enrichment

Match an IP address to the company website behind it, enrich your lead data and reach out at the right moment.

Security research

Find the other domains on a server that hosts phishing, scam or spam sites, and spot patterns across shared hosting.

Built for developers

Plain REST and JSON, code examples and an OpenAPI spec. Load the spec into your API client to try every endpoint before you write a line of code.

Integration Documentation

The hosted domains API is part of the Medium plan and above.

See pricing

Frequently asked questions

What is a reverse IP lookup? How many domains can share one IP address? What is the difference between reverse DNS and reverse IP lookups?