Matt Cutts States Sites on IPv4 & IPv6 Won’t Be Duplicate Content

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Matt Cutts States Sites on IPv4 & IPv6 Won’t Be Duplicate Content

In a new Google Webmaster Help YouTube video published today, Matt Cutt answers a question from a user regarding IPv4 and IPv6. IPv4 is the current format of an IP address; something like 393.93.295.382. The IPv6 addresses were introduced to deal with the upcoming lack of available IPv4 numbers. An IPv6 number will look something like this: 2001:0db8:85a3:0042:1000:8a2e:0370:7334, but multiple zeroes can be omitted (2001:0db8:85a3:0042:0000:0000:0000:0000 to 2001:0db8:85a3:0042::).

The user wanted to know whether or not the same site on both versions of IP will be considered duplication content.

Cutts stated:

“No, it won’t be considered duplicate content…you’re basically serving up the same content, but don’t worry about being tagged with duplicate content. It’s similar to serving up content at .com and .pl sites.”

World Launch Day for IPv6 was June 6, 2012, but many websites haven’t yet transitioned into the new format. To test your IPv6 connectivity, check out and to find out what your current IP address is, try

View the entire video here:

Kelsey Jones
When she's not editing and scheduling posts, Kelsey Jones manages the Marketing Nerds podcast and moderates SEJ Summit conferences and Marketing ThinkTank webinars. She has been in digital marketing since 2007 and journalism since 2004. Kelsey started StoryShout, the first and only news content marketing agency, in 2016.
Kelsey Jones
Kelsey Jones
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  • Ross Chandler

    The IPv6 content could be more specific.

    e.g. If you’re accessing through a Smartphone then you may be going through a CGNAT box. With IPv6 you’ll get a public IPv6 prefix dedicated to you so content providers will be able to return more geo-location specific content.