This info according to this source https://www.eff.org/deeplinks/2013/06/third-party-resources-nsa-leaks
uMatrix has it covered. In the HTTPS Everywhere Atlas: https://www.eff.org/https-everywhere/atlas/domains/wunderloop.net.html
Info here: http://cookiepedia.co.uk/host/req.connect.wunderloop.net
Not trusted here: https://www.mywot.com/en/scorecard/req.connect.wunderloop.net
It is blocked for me by an extension.
Netcraft report: http://toolbar.netcraft.com/site_report?url=http://req.connect.wunderloop.net
Warnings: http://www.dnsinspect.com/udagdns.net/1428876705
uBlock also blocks htxp://audiencescience.com/ from wunderloop…because of filter: /audiencescience.
polonus