Tell Google Analytics to anonymize the information sent by the tracker objects by removing the last octet of the IP address prior to its storage.
https://code.google.com/apis/analytics/docs/gaJS/gaJSApi_gat.html
Analytics and Tracking
Get access to data on 2,941,770 websites that are Google Analytics Anonymize IP Customers. We know of 595,992 live websites using Google Analytics Anonymize IP and an additional 2,345,778 sites that used Google Analytics Anonymize IP historically and 201,330 websites in the United States.
Get a list of 2,941,770 websites using Google Analytics Anonymize IP which includes location information, hosting data, contact details, 595,992 currently live websites and an additional 322,683 domains that redirect to sites in this list. 2,345,778 sites that used this technology previously and 201,330 websites in the United States currently using Google Analytics Anonymize IP.
Countries
Financial
Group
Region