For me too.. well, sometimes it resolves, sometimes it doesn't. There seems to be an issue with .io globally: https://twitter.com/dnsimple/status/342991722365734912
$ host www.filepicker.io www.filepicker.io is an alias for anycast.filepicker.io. anycast.filepicker.io has address 174.129.254.207 Host anycast.filepicker.io not found: 3(NXDOMAIN) Host anycast.filepicker.io not found: 3(NXDOMAIN)
$ host filepicker.io Host filepicker.io not found: 3(NXDOMAIN)