AdxPsfFetcher-Google

seems to be real G, but no reference anywhere

[smallcompany]

I see this one causing 404s. IPs are different but seem to be from Google's range.

Requested pages are really strange, total non-sense. It's like:

/unicast/unicastIFD.html
/flashtalking/ftlocal.html
/eyeblaster/addineyeV2.html
/doubleclick/DARTIframe.html
/unicast/unicastIFD.html
/eyewonder/interim.html
/mediaplex/mojofb_v9.html
/doubleclick/adx_iframe.html

... and so on.

Some of these remind me onto something to do with DoubleClick, but I still find it strange that no real reference can be found on the web.

Thanks

[keyplyr]

Google's range? Google has a lot of them.
Some Google owned IP ranges are leased out just like AWS so it could be anyone. Wise to learn that distinction.

As for nonsense... no such thing really. These are the files your visitor was requesting. These files may or may not reside on your server, but they make sense to to the visitor or bot.

[not2easy]

I just finished checking some of the visitors from "Google" IPs. Most recently seen driving "Mozilla/5.0 (en-US) AppleWebKit/537.36 (KHTML, like Gecko; Hound) Chrome/27.0.1453 Safari/537.36" this morning from 66.249.91.142 - but that is part of the "who knows, anything goes" 66.249.80.0 - 66.249.93.255 range of that Google block from 66.249.64.0 to 66.249.95.255. As keyplyr said - it could be anyone.

[keyplyr]

Some webmasters block all Google ranges except those delegated as crawl. I don't because there are several agents I consider benneficial to my intetests coming from Google's proxy ranges.

[lucy24]

no real reference can be found on the web

Well, that rules out honest (or dishonest) error. Once in a blue moon you'll see someone getting their DNS garbled, with the result that they request a bunch of URLs from your site that really do exist ... on someone else's site. Not blind guessing like /wp-admin/ but individual distinctive URLs. Search for "/directory/subdir/filename.html" and if the URL exists-- anywhere-- it will crop up in search.