Reverse IP Lookup - Discover Hosted Domains
Unlock the potential of your IP address with our Reverse IP Lookup. This powerful tool reveals all domain names associated with a specific IP, allowing you to identify websites sharing the same server. Perfect for webmasters, security analysts, and anyone interested in understanding web hosting relationships.
Understanding Reverse IP Lookup
What is Reverse IP Lookup?
A reverse IP lookup performs a DNS PTR query to find domain names associated with an IP address. It's the opposite of regular DNS lookups that convert domain names to IP addresses.
Common Use Cases
Server Analysis
Identify all domains hosted on a specific server, useful for shared hosting investigation.
Network Troubleshooting
Debug email delivery issues, as many spam filters check PTR records.
Security Research
Investigate potentially malicious IPs by finding associated domains.
Server Configuration
Verify proper DNS configuration for mail servers and hosting environments.
Technical Details
PTR Records
PTR (Pointer) records map IP addresses to domain names in the special in-addr.arpa zone for IPv4 or ip6.arpa for IPv6.
Resolution Process
The IP is reversed and appended with in-addr.arpa (IPv4) or ip6.arpa (IPv6), then queried for PTR records.
Common Issues
Not all IP addresses have PTR records. They're commonly set for mail servers and hosting providers, but not required for regular websites.
