DNS & Email TOOL
Reverse PTR Generator
Generate reverse DNS PTR record names and zone-file lines from an IPv4 address or a small CIDR block.
When to use this tool
Use it when preparing reverse DNS records for a mail server or an assigned IPv4 range.
Use it in three steps
- Choose a single IPv4 address or CIDR block, enter the hostname, then copy the generated PTR record names and zone lines.
- Review the calculated values against your environment and its requirements.
- Copy or document the result only after validating it for production use.
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