I have a small script that I mangled together to enable me to input user IP addresses into a MySQL db. The IP's (for example 192.168.1.1) are all in a single field. The IP field is set to VARCHAR(100) Unique but it is not the primary key. I have found that my IPs are not consecutive and I would like to create a script that would generate available IPs from this list of used ones. For example, there are 245 possible IPs in this class C - I want it to see the ones that have been issued and generate a list of what is still available. Can someone help point me in the right direction. I don't really know even where to begin. thanks, Doug
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