Reverse IP Lookup
Find all domains and websites hosted on the same IP address. Reveals shared hosting neighbours, virtual hosts and co-located sites. Enter an IP address or domain name.
🔍
What This Shows
All domains currently pointing to the same IP address — shared hosting neighbours, CDN-hosted sites and virtual hosts on the same server.
🛡️
Security Use Cases
Identify malicious domains co-hosted with a suspicious IP, discover related infrastructure in security investigations, or audit your own hosting.
📊
Data Source
Results come from passive DNS databases that track historical and current DNS resolution records across the internet.
What is a reverse IP lookup?+
A reverse IP lookup finds all domain names currently resolving to a specific IP address. Unlike a regular DNS lookup (domain → IP), reverse lookup goes the other direction — it queries passive DNS databases to find all domains sharing that IP.
Why would multiple domains share one IP?+
Shared web hosting is very common — one server with one IP address hosts hundreds or thousands of websites. Each has its own domain but they all resolve to the same IP. CDNs like Cloudflare also serve many domains from shared IP pools.
Is this data always current?+
Passive DNS data may lag behind real-time DNS by hours or days. A domain that recently moved away from an IP may still appear in results. For current DNS resolution, use our DNS Record Checker.
What are the security implications?+
Attackers often host multiple malicious domains on the same server. If one domain is flagged as malicious, checking its IP with reverse lookup can reveal related malicious domains. Also useful for identifying phishing campaigns using shared infrastructure.