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Here's how I do it. I use a custom filter and filter IPs by range PART ONE - Generate RegEx for IP Range Go to this RegEx range tool: http://www.analyticsmarket.com/freetools/ipregex Enter your IP address in "First IP, but change the "D block" to your start range Enter your IP address into "Last IP", but change the "D block" to your end range Click generate, and here's what you get for your first location: ^174.177.179.([0-9]|1[0-9]|2[0-5])$ PART TWO - Create The Filter Go to create a new filter in Analytics Give it a name Select Custom For field choose "IP Address" Paste your RegEx in "Filter Pattern Save

You're not using a geo redirect are you? If not, then it does seem like you have had an algorithm penalty (assuming there isn't a manual notice) on WMT.