I tried your second suggestion before I posted my inquiry and found a little info. I would like to dig a little deeper, if at all possible.
Thank you for the suggestions, very kind of you!
"Search an IP" - what exactly are you looking for?
An IP is assigned to a subscriber - it could be static, or dynamic (in other words, the person who uses that IP may change)
Short of requesting a court order, it may not be possible to find out who was using that IP at a specific time frame (if it was dynamic).