IP Range Regular Expression Builder
Unfortunately, Google Analytics doesn't show IP addresses in the reports. But you can apply a filter to IP addresses - this tool takes a range of IP addresses and generates a single regular expression that matches all IP addresses in the range.
If you keep a copy of the tracking data sent to Google, you can process it in Angelfish Software. Angelfish provides details (e.g. IP addresses and usernames) that aren’t shown in Google Analytics and is ideal for any internal / external website or web-based application, like SharePoint, Blackboard, Oracle, and more.
Enter the first IP address in the range.
Copy and paste the results below into the "IP address" or "Filter Pattern" field of the "Create New Filter" page.