Discover all domains hosted on a specific IP address — including historical associations. Built for OSINT professionals, security teams and infrastructure researchers.
A reverse IP lookup identifies all domain names hosted on a given IP address. While traditional DNS queries resolve a domain to an IP, reverse IP reveals the domains behind shared hosting and cloud infrastructure.
This technique is essential for mapping digital infrastructure and uncovering hidden relationships between assets.
{
"ip": "7.7.7.7",
"asn": 749,
"hostnames": [
{
"hostname": "3.cluster.test.bifrost.pt.xiaomi.com",
"last_seen": "2024-01-31"
},
{
"hostname": "anverbo.ru",
"last_seen": "2026-02-17"
},
{
"hostname": "boyulclinic.com",
"last_seen": "2024-01-19"
},
{
"hostname": "bristoldigital.com",
"last_seen": "2024-01-22"
},
{
"hostname": "m.boyulclinic.com",
"last_seen": "2024-01-19"
},
{
"hostname": "visatest.com",
"last_seen": "2026-02-19"
},
{
"hostname": "www.boyulclinic.com",
"last_seen": "2024-01-19"
}
]
}Modern hosting environments allow hundreds of domains to share a single IP address. Reverse IP intelligence helps uncover hidden infrastructure connections.
The Reverse IP endpoint is part of the IP Ninja unified intelligence API. With a single subscription, you gain access to multiple OSINT endpoints designed for comprehensive infrastructure analysis.
Retrieve structured WHOIS data for domains and IP addresses.
Learn more →Map full attack surfaces by discovering subdomains.
Learn more →Enrich IP addresses with ASN and geographic intelligence.
Learn more →One API key. Multiple endpoints. Flexible subscription tiers.
View plans →Accuracy depends on DNS visibility and hosting architecture. IP Ninja aggregates multiple data sources to provide reliable IP-to-domain associations.
Yes. Reverse IP lookup is especially useful in shared hosting environments where multiple domains reside on a single IP address.
Reverse IP lookup is available across subscription tiers with varying rate limits. Visit the pricing section to compare available plans.
Yes. All endpoints are accessible through a unified API, allowing seamless correlation between reverse IP, WHOIS, subdomain enumeration and geolocation data.
Access reverse IP lookup and the full OSINT API with a single subscription.