Introduction
Many times, as the administrator of the server, you may need to perform lookups to various IP addresses that you encounter within your server logs to understand if the traffic is normal or not.
Procedure
To determine more information about an IP address, you may need to perform a search via the ARIN database:
However, some 3rd-party tools and databases may provide additional information for the IP address. Here are a few other tools that can be helpful.