A study conducted by RIPE Labs indicates that about 1.89% of spam are received over IPv6. “With the increased deployment of IPv6, we were curious to see how much the amount of spam sent over IPv6 increases.

We looked at the e-mail system of the RIPE NCC and produced some statistics that could be seen as an indication for the overall trend of spam sent over IPv6,” says RIPE in a blog post explaining the analysis. Group also notes that the study was based on one week’s worth of data and that it excluded messages already rejected by blacklisting and greylisting.