Reverse DNS Lookup
Built for pros who need answers fast, but friendly enough for anyone exploring the digital landscape. Whether you're investigating security alerts or just curious about who's who on your network, we've got you covered.
Batch Processing
Resolve multiple IPs with CIDR range support
Network Mapping
Identify host patterns and infrastructure setup
Security Validation
Verify legitimate servers and detect suspicious hosts
Reverse DNS Lookup
Enter an IP address or CIDR range to perform reverse DNS lookup
Understanding Reverse DNS
Reverse DNS (rDNS) lookup is a crucial network diagnostic tool that resolves an IP address to its associated hostname through PTR records. Unlike forward DNS that converts domain names to IP addresses, rDNS does the opposite, making it valuable for network troubleshooting and security analysis.
When to Use Reverse DNS Lookup
- Verify email server configurations
- Investigate suspicious network activity
- Validate network infrastructure setup
- Debug connectivity issues
- Perform security audits
Note: Our tool supports both individual IP addresses and CIDR notation for bulk lookups. For optimal performance, please limit CIDR ranges to /24 or smaller.