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 3,126,782 websites that are Google Analytics Anonymize IP Customers. We know of 737,744 live websites using Google Analytics Anonymize IP and an additional 2,389,038 sites that used Google Analytics Anonymize IP historically and 271,417 websites in the United States.
Get a list of 3,126,782 websites using Google Analytics Anonymize IP which includes location information, hosting data, contact details, 737,744 currently live websites and an additional 429,049 domains that redirect to sites in this list. 2,389,038 sites that used this technology previously and 271,417 websites in the United States currently using Google Analytics Anonymize IP.
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