A reverse IP lookup is the process of finding all domain names or websites that are hosted on a single IP address. While a regular IP lookup converts a domain name to its IP address, a reverse IP lookup does the opposite by showing all domains associated with a specific IP.

There are several reasons to perform a reverse IP lookup:

• Finding related websites owned by the same company or individual
• Identifying potential competitors hosted on the same server
• Security research to discover potentially malicious websites sharing an IP
• SEO analysis to understand hosting neighborhoods
• Server administration and troubleshooting
• Investigating shared hosting environments

The accuracy of reverse IP lookups can vary based on several factors:

• For dedicated IP addresses, results are highly accurate as they typically host a single website or related websites from the same owner
• For shared hosting environments, results will show multiple unrelated websites that happen to share the same server
• Some websites use content delivery networks (CDNs) or load balancers that can make reverse IP lookups less effective as the website might be distributed across multiple IPs
• Virtual hosting configurations can also affect the accuracy of reverse IP lookups

Our tool uses multiple data sources to provide the most comprehensive results possible.

A reverse IP lookup will attempt to show all websites associated with an IP address, but it may not always display a complete list due to:

• Some domains may be configured as private in the DNS records
• Newer domains might not yet be indexed in the databases we query
• Subdomains might not always be included in results
• Websites using wildcard DNS entries might not be properly identified

Despite these limitations, our reverse IP lookup tool provides valuable insights into the websites sharing a server or IP address.

Yes, reverse IP lookup is a valuable security tool for:

• Identifying potential phishing sites that might be hosted on the same server as legitimate websites
• Discovering malicious domains that share infrastructure with known malicious sites
• Investigating the attack surface of a network by identifying all publicly accessible web services
• Performing security audits to ensure proper domain isolation and configuration
• Detecting unauthorized websites or services running on company-owned IP addresses

Security professionals regularly use reverse IP lookups as part of their threat intelligence gathering process.

While these terms are sometimes used interchangeably, they refer to different processes:

• Reverse DNS (rDNS): This is the process of determining the hostname or domain name associated with a specific IP address through PTR records. It typically returns a single hostname.
• Reverse IP Lookup: This goes beyond reverse DNS by identifying all domain names pointing to a specific IP address. It can reveal multiple websites hosted on the same server.

Our tool performs both operations, showing you both the hostname of the IP (reverse DNS) and all domains hosted on that IP (reverse IP lookup).

Reverse IP lookup can only identify websites that have publicly accessible DNS records pointing to the IP address in question. It cannot reveal:

• Websites that are only accessible through internal DNS
• Sites protected by access controls that don't have public DNS entries
• Development or staging environments not published to public DNS
• Websites using specific security measures to hide their DNS associations

The tool works by analyzing public information and records, so it's limited to discovering websites that have established a public presence connected to the IP address.