Live reverse DNS lookup
Queries the public DNS resolver for the address's PTR record.
PTR Lookup
Look up the public reverse DNS hostname for an IPv4 address using a live PTR query.
DNS & EMAIL / LIVE LOOKUP
PTR Lookup
DNS & Email TOOL
PTR Lookup
Look up the public reverse DNS hostname for an IPv4 address using a live PTR query.
When to use this tool
Use it to confirm reverse DNS for a mail server, public IP address or service endpoint.
Use it in three steps
- Enter a public IPv4 address and review the hostname returned by the live PTR lookup.
- Review the calculated values against your environment and its requirements.
- Copy or document the result only after validating it for production use.