[BRitterbeck]

The last set of addresses under the DDoS part of the page resolves to Google's crawlers.

[dredmorbius]

Another set is Yandex, a Chinese [Edit: Nope, Russian, see below] web crawler. I've done a basic "what CIDRs and ASNs were involved" in a top-level post.

These idiots can't tell Web crawler traffic from DDoS (though often there's little practical difference).

[bx_]

https://company.yandex.com/

Yanex is Russia's Google.

[dredmorbius]

Derp. I was thinking of Baidu. Knew it was search at least, from logs.

[Shank]

Probably an amplification attack using Google, a clever way to increase the size of an attack without adding too much additional cost.

[Buge]

An interesting example is creating 700 Mbps with a few google docs.

http://chr13.com/2014/03/10/using-google-to-ddos-any-website...