Uses two CGI scripts to provide a web-enabled look into DNS for each zone. The assignment column describes the purpose of each zone. IP Tracker Web Page Step 2 Understand how the CGI scripts function. Step 3 Download the source code for the scripts and customize them for your environment. By creating reverse lookup zones for each IP subnet, you gain a robust database that can be used to track assignments within an IP address space.
Reverse lookups can determine the allocation status of any address from any DNS client.
Network operators must account for used and unused IP addresses. It is recommended that each IP address be given a DNS PTR Resource Record, even if the address is unused. 1 IN PTR unused-1.the.net. 2 IN PTR unused-2.the.net. 3 IN PTR unused-3.the.net.