PTR Sweep Planner
Analyze PTR record coverage for network blocks and identify missing or extra records
Quick Examples
Common Patterns:
Coverage Analysis Results
Missing PTR Records (252)
0.1.168.192.in-addr.arpa1.1.168.192.in-addr.arpa2.1.168.192.in-addr.arpa3.1.168.192.in-addr.arpa4.1.168.192.in-addr.arpa5.1.168.192.in-addr.arpa6.1.168.192.in-addr.arpa7.1.168.192.in-addr.arpa8.1.168.192.in-addr.arpa9.1.168.192.in-addr.arpa10.1.168.192.in-addr.arpa11.1.168.192.in-addr.arpa12.1.168.192.in-addr.arpa13.1.168.192.in-addr.arpa14.1.168.192.in-addr.arpa15.1.168.192.in-addr.arpa16.1.168.192.in-addr.arpa17.1.168.192.in-addr.arpa18.1.168.192.in-addr.arpa19.1.168.192.in-addr.arpaRecommended Actions
PTR Coverage Planning
PTR coverage analysis helps identify gaps in reverse DNS configuration. Complete coverage ensures all IPs in your network blocks have proper reverse DNS entries for troubleshooting and compliance requirements.
Naming Pattern Validation
Use regex patterns to enforce consistent hostname naming conventions. Patterns like .*\.corp\.example\.com\.$ ensure all PTR records point to properly formatted hostnames within your
domain structure.
Common PTR Issues
Missing PTRs can cause mail delivery problems and failed reverse lookups. Extra PTRs may indicate outdated records or configuration drift. Regular PTR sweeps help maintain DNS hygiene and network documentation accuracy.
Remediation Best Practices
Create missing PTRs in batches, verify forward/reverse consistency (A/AAAA records), and establish monitoring to detect future gaps. Use descriptive hostnames that include network or service information for easier troubleshooting.