Google Captcha on web searches

Nicholas Warren nwarren at
Tue Nov 10 17:33:18 UTC 2015

We had that problem too, it was only happening to computers with a NATed v4
address. Connecting to Google over IPv6 made the problems go away.

Thank you,
- Nich

> -----Original Message-----
> From: NANOG [mailto:nanog-bounces at] On Behalf Of Joseph Jenkins
> Sent: Tuesday, November 10, 2015 11:28 AM
> To: nanog at
> Subject: Google Captcha on web searches
> We started getting a Google Captcha for our web searches this morning.
> Does anyone have contact info for Google so that I can contact them and
> figure out where the traffic is coming from on my side or what service it
> is going to so that I can track down the users?
> Thanks,
> Joe Jenkins
> 909.636.2097

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