Your IP addresses may be part of a larger network which also includes IP addresses of security applications whose purpose is to access links sent to you via email messages and make sure that they don't contain any phishing content.
There is nothing you should worry about, as this is a very common practice. For instance, if you've accessed the survey while being connected to your office's internet, then there's a high chance that there are security applications in your network ensuring your safety while you're navigating your emails.
In order to combat automated responses submitted by email security systems, we're showing a captcha page to IP addresses previously flagged as being used by email security applications.
All you have to do is to solve the captcha and proceed to the survey.