Reverse DNS Lookup
Enter an IP address to find its hostname (PTR record).
Searching for hostname...
Hostname (PTR Record)
---
Why Use Reverse DNS?
Reverse DNS is crucial for email servers. Many email providers will reject emails from servers that do not have a valid PTR record matching their IP address.
Common Uses
- Email Verification: Confirming that an IP address belongs to the domain sending the email.
- Network Troubleshooting: Identifying the name of a server or router in a traceroute.
- Security Logs: Converting IP addresses in log files to readable hostnames.