Recently, I had to debug a lot of watchdog entries in a client's site. In order to better understand the meaning and cause of each entry, I had to copy the IP address that generated the notice or error and paste it in a DNS Resolver to check who or what was the visitor that generated it. It's easier to understand crawl-66-249-66-212.googlebot.com than 18.104.22.168.
I thought that instead of doing this repetitive task, it would be much more helpful to see the hostname besides the IP address. But there is no such option in Drupal 7. So, I coded a very simple module that does just that. Shows the hostname besides the IP address. I uploaded the module at Drupal.org. If your site is built on Drupal 7, you can download and use the module for free at https://www.drupal.org/project/resolveip.
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Published on 19 Aug 2012